3601results about "Association with control/drive circuits" patented technology

The invention relates to an electronics module (102) for a ventricular assist device, wherein the ventricular assist device has a motor housing for accommodating a pump motor. The electronics module (102) comprises an electronics section (204) for accommodating at least one electronic component (206) and / or at least one electrically conductive contacting element (208), and a coupling section (202) designed as a joint between the motor housing (104) and the electronics section (204) or as a separate component to be joined, wherein the motor housing (104) and the electronics section (204) are combined or can be combined via the coupling section (202) with one another to form a fluid-tight module housing (104) to be arranged in a blood vessel.

The invention relates to a drive (30) comprising: - 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); - at least one converter, wherein the converter comprises at least some of the following components, such as power semiconductors, inductors, capacitors, control and regulation units, and communication units in a housing volume (13), wherein the converter is radially surrounded at least partially by the B-side end shield (7), and at least some components of the converter are thermally connected to the end shield (7), in particular by arranging heat-intensive components of the converter on an inner side wall (20) of the cup-shaped end shield (7).- wherein the converter is arranged axially between the dynamoelectric rotary machine (1) and the bearing of the B-side pot-shaped bearing shield (7).

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).

An electric work machine with improved workability at high output, configured to cut a work target, is provided. The electric work machine comprises: a working portion configured to cut the work target and a main body including: a housing; a flow path forming portion; a motor; and a control unit, wherein the motor generates rotational power for driving the working portion, the control unit electrically controls rotation of the motor, the flow path forming portion forms an air flow path including a first air flow path and a second air flow path, the first air flow path communicates with an exterior of the housing to allow external air to flow to the motor via the control unit, and the second air flow path communicates with the exterior of the housing so as to allow external air to flow directly to the motor.

The invention provides an electric engine, a control method, a related device, a motor controller and an aircraft, and relates to the technical field of aircrafts. The electric engine comprises a power motor, a heat dissipation system and a control module, a cavity is formed in the power motor, the control module is integrated in the cavity, the space occupied by the electric engine is reduced, and therefore the size of the aircraft is reduced; the control module comprises a plurality of integrated driving modules, part of the driving modules are electrically connected with the power motor so as to control the power motor, and part of the driving modules are electrically connected with a heat dissipation motor in the heat dissipation system so as to control the heat dissipation motor. The performance and efficiency of the electric engine are improved through unified integrated control over the power motor and the heat dissipation motor. And through a unified control architecture, the system design is simplified, the development and maintenance cost is reduced, and the maintainability of the electric engine is improved.

The invention relates to a multi-source system comprising an electric machine (M), of the type comprising a rotor and a stator (1), the stator (1) comprising a plurality of windings (10, 11, 12) made of turns of insulated conductive material, each winding (10, 11, 12) comprising a plurality of independently powered coils (100, 101, 102), characterised in that the system also comprises a plurality of DC power sources and a plurality of power electronics converters associated with different coils (100, 101, 102) of the electric machine (M), each power source powering one or more power electronics converters and each power source being connected to at least one coil (100, 101, 102) of each winding (10, 11, 12) of the electric machine (M).

The unit includes a capacitor; an electric circuit electrically connected to the capacitor, a rotating electrical machine electrically connected to the electric circuit, and a shaft connected downstream of the rotating electrical machine in terms of power. The shaft does not overlap the rotating electrical machine when viewed in a first radial direction, one of the capacitor and the electric circuit overlaps the rotating electrical machine when viewed in the first radial direction, and the other of the capacitor and the electric circuit overlaps the shaft when viewed in the first radial direction.

The invention belongs to the technical field of permanent magnetization remanufacturing, and particularly relates to a permanent magnetization regeneration method for a waste motor of copper alloy wire processing equipment, and the method comprises the steps: disassembling a waste asynchronous motor, and reserving a case, a stator, a rotor core and a rotating shaft which are not damaged; the specifications of the air injection channels are determined according to the diameter of the rotating shaft, more than two air injection channels are arranged on the rotating shaft at equal-angle intervals, and then the rotating shaft is installed in the machine shell; the rotor core is split to obtain steel sheets, and permanent magnet grooves, magnetic isolation air grooves and air injection channel grooves are formed in the steel sheets; the permanent magnets are assembled in the permanent magnet grooves, then the steel sheets are laminated according to a first rule to obtain a rotor, and then the rotor is assembled to the rotating shaft; a rear end cover of the machine shell is removed, a heat dissipation machine cover is manufactured according to the diameter of the rear end cover, a bearing groove and an air outlet hole are formed in the heat dissipation machine cover, and then the heat dissipation machine cover is assembled to the machine shell; and a frequency converter is additionally arranged on the shell. The remanufactured permanent magnet synchronous motor manufactured by the method has better sealing performance and heat dissipation performance.

Certain embodiments provide a power tool comprising a motor including a flywheel, an inertial measurement unit (IMU) configured to output IMU data, and a controller coupled to the motor and the IMU. The controller is configured to process the IMU data to generate processed IMU data, detect, based on the processed IMU data, whether the power tool has been moved in a pickup motion that is associated with an imminent use of the power tool, and increase a speed of the motor to a target speed in response to the detection.

A case body has a first opening that is open along a first direction and through which an inverter device is insertable, a surrounding wall portion disposed along the first direction so as to surround the first opening, and a second opening that is formed in the surrounding wall portion and through which a power cable is insertable. A cover member is fixed to the surrounding wall portion by a plurality of fastening members disposed away from each other along an opening edge of the first opening so as to cover the first opening. A second opening width in a direction orthogonal to the first direction is smaller than an opening width of the second opening in the first direction, and a pair of the fastening members is disposed on both sides across the second opening.

The invention provides an axial magnetic flux motor driven RV speed reduction driving assembly which comprises an axial magnetic flux motor unit and an RV speed reducer unit which are connected, the axial magnetic flux motor unit and the RV speed reducer unit are integrated in a shell, the axial magnetic flux motor unit comprises a plurality of stators which are distributed in an annular mode, and the stators are connected with the axial magnetic flux motor unit. A stator is arranged on the rotor, a disc type rotor is arranged on each of the two sides of the stator, a plurality of torsion bars which are uniformly distributed in the circumferential direction are arranged on the rotor facing the side where the RV speed reducer unit is located, the torsion bars are connected with a sun gear of a planetary gear train of the RV speed reducer unit, and an output disc of the RV speed reducer unit is a power output end. The RV speed reduction driving assembly driven by the axial magnetic flux motor has the advantages of being large in starting torque, high in mechanical efficiency, compact in structure, high in overload capacity and the like.

The invention provides a water-cooling heat dissipation type motor end cover and shell structure which comprises a motor outer shell, a motor inner shell, a first water cooling mechanism, a second water cooling mechanism, a water supply mechanism and a control console. Therefore, automatic switching between a basic heat dissipation mode in which only the first water cooling mechanism is started, an intelligent cooperation mode in which the two water cooling mechanisms are started cooperatively, and a full-power heat dissipation mode in which the two water cooling mechanisms are fully opened is intelligently realized. Through cooperation of the double water cooling channels and an intelligent control strategy, the problems of fixed heat dissipation capability, slow response and low energy efficiency in the prior art are solved, accurate matching of the heat dissipation capability and the actual working condition of the motor is realized, and the heat dissipation efficiency, the energy-saving effect and the system reliability are remarkably improved.

A self-excitation motor disclosed by the present invention comprises a rotor, a first end of the rotor is equipped with a rectification circuit, the rotor comprises a rotor iron core and a plurality of harmonic windings and excitation windings, the rotor iron core is provided with rotor teeth, and each harmonic winding and each excitation winding are respectively wound on the corresponding rotor teeth. Each harmonic winding comprises a first harmonic winding and a second harmonic winding, the winding directions of the first harmonic winding and the second harmonic winding are the same, star connection is adopted, one ends of the first harmonic winding and the second harmonic winding are connected in series in a one-to-one mode, and the other ends of the first harmonic winding and the second harmonic winding are jointly connected to form a star neutral point; the other end of each second harmonic winding is connected with the midpoint of each bridge arm in the rectifying circuit in a one-to-one manner; the winding directions of the excitation windings on every two adjacent rotor teeth are opposite, and the two ends of each excitation winding are electrically connected with the direct current output end of the rectification circuit. This induces and rectifies the current for excitation more efficiently. The invention further provides a motor control strategy based on high-frequency harmonic current phase optimization.

To provide a vehicle powertrain structure capable of ensuring safety during a vehicle collision, a vehicle includes a drive system, a battery, and an inverter. The drive system has a motor for travel of the vehicle and a motor housing formed of a conductive material. A direct current (DC) connector, to which a wire extending from the battery is connected, is disposed in a rear wall portion of the battery housing. The motor housing accommodates DC bus bars that connect the DC connector and a circuit section of an inverter and an auxiliary machine wire that connects between the DC connector and an electric compressor mounted on the vehicle. A junction box in which the auxiliary machine wire is branched from the DC bus bars is arranged in a rear space behind a motor accommodation space that accommodates a stator and a rotor of a motor.

The utility model provides a commutation stator module and a magnetic drive conveying system. The commutation stator module comprises a pedestal; the stator body is fixed on the base; the commutation armature winding is arranged on the stator body, and the commutation armature winding comprises a first commutation winding extending along a first direction and a second commutation winding extending along a second direction; the limiting assembly is arranged on the base, the limiting assembly comprises a limiting piece and a driving piece, the driving piece drives the limiting piece to ascend and descend, so that the limiting piece is switched between a receding position and a guiding position, the rotor module enters and exits when the limiting piece is located at the receding position, and the rotor module enters and exits when the limiting piece is located at the guiding position. When the limiting piece is located at the guiding position, the rotor module is limited and guided; a receding space is formed between the stator body and the base, and the driving parts are arranged in the receding space. In this way, the conveying direction can be changed without occupying extra space, and the conveying efficiency is high.

The invention discloses an efficient cooling driving motor for an electric industrial vehicle, which comprises a motor main body, the motor main body comprises a stator and a rotor, and the end part of a non-bearing end of a rotor rotating shaft is of a hollow structure; and the water cooling assembly comprises a rotating block, a liquid inlet pipe and a liquid outlet ring, a plurality of cooling pipes are arranged on the outer side of the rotating block in the circumferential direction, and one end of each cooling pipe is connected with the liquid outlet ring in a penetrating mode through the two sides of the stator. Cooling liquid firstly flows through the rotating hollow rotating shaft of the rotor to directly absorb eddy-current loss of a rotor core and winding heat, then is shunted to the cooling pipes on two sides of the stator through the rotating block, and absorbs heat of the stator core and the winding through the stator position, so that synchronous water cooling of a rotating part and a static part is realized; and an internal water cooling-external air cooling three-dimensional heat dissipation network is formed by matching with the air cooling assembly, so that the internal temperature difference of the motor is greatly reduced, performance degradation caused by local overheating is effectively inhibited, and a core guarantee is provided for high-power-density application and long-service-life operation of the motor.

The invention discloses a heat dissipation system and method for a sealed motor, and belongs to the technical field of sealed motors and transmission devices. The system comprises a motor unit, a multistage gearbox unit, a liquid cooling unit, an air cooling unit, a plurality of groups of sensors and a controller. The liquid cooling unit is integrated in the motor outer cover, and the air cooling unit is installed on the motor radiating ribs. According to the method, the total heating power and the variable target temperature of the system are dynamically calculated by collecting the current, the temperature and the rotating speed of the motor and gear signals of the gear box in real time, the required heat dissipation power is calculated in real time through a nonlinear function based on the temperature difference, and then heat dissipation resources of the air cooling unit and the liquid cooling unit are cooperatively distributed with the optimal energy efficiency ratio. According to the invention, feedforward prediction temperature control of dynamic working conditions is realized, the problems of heat dissipation lag, low energy efficiency and overheating risk of the sealed motor under complex load and multi-gear operation are solved, and the reliability, adaptability and overall energy efficiency of the system are significantly improved.

The invention belongs to the field of shield pumps, and relates to a low-harmonic low-noise high-efficiency high-reliability axial magnetic field permanent magnet shield pump which comprises a pump body. The pump body is provided with an impeller accommodating cavity, a liquid inlet and a liquid outlet are formed in the pump body, and the liquid inlet and the liquid outlet are respectively communicated with the impeller accommodating cavity; the power unit is mounted on the pump body; the power unit comprises a front disc type stator, an axial magnetic field rotor, a rear disc type stator, an impeller and an integrated controller, the front disc type stator is installed on the pump body, and the rear disc type stator is installed on the front disc type stator; the axial magnetic field rotor is arranged between the front disc type stator and the rear disc type stator; the integrated controller is installed on the rear disc type stator. After the structure is adopted, the motor has the beneficial effects that the structure is more compact, the efficiency is higher, the noise is lower, the cooling and heat dissipation are better, the main materials are more saved, the cost is lower, the maintenance is convenient, and the motor can be widely applied to more fields.

An electric motor may include a motor housing. An electric motor may include a shaft that extends in a longitudinal direction through a length of the motor housing, a first motor disposed within the motor housing and mounted to the shaft, a second motor disposed within the motor housing and mounted to the shaft. An electric motor may include an adaptor disposed within the motor housing, where a portion of the first motor and a portion of the second motor are disposed within the adaptor and the adaptor supports and pilots the first motor and the second motor. An electric motor may include at least one motor controller disposed on the adaptor and within the motor housing, the at least one motor controller electrically connected to the first motor and to the second motor.

The aircraft dual-redundancy two-in-one direct-drive electric driving system comprises an outer rotor assembly, a stator assembly and a controller assembly, the outer rotor assembly is rotationally connected with the stator assembly, the stator assembly comprises a stator shell and windings, the number of the windings is two, and three-phase outgoing lines of each winding penetrate through corresponding through holes A respectively; a sealing plug ring is arranged between each winding and the corresponding through hole A. The controller assembly comprises a circuit board and a wiring board, the circuit board and the wiring board are fixed in the installation cavity, IGBT modules are arranged on the circuit board at intervals, and three-phase outgoing lines of each winding are connected with the corresponding IGBT modules. The inner ring of the wiring board is connected with the corresponding IGBT module, two power supply connectors are arranged outside the stator housing, and the outer side of the wiring board is connected with the corresponding power supply connectors. The direct-drive electric drive system is highly integrated, compact in structure, efficient in heat dissipation and reliable in sealing and has the real high-reliability dual-redundancy capacity.

The utility model relates to an electric alloy cake rotary table which aims at solving the problems that an existing electric cake rotary table is complex in structure, unstable in base, not fine in rotating speed adjustment, insufficient in safety and the like. According to the turntable, the base and the turntable are made of high-quality alloy materials, so that the bearing capacity and the stability are enhanced; the motor is provided with an advanced electronic speed regulation system, stepless regulation of the rotating speed is achieved, and fine requirements under various use scenes are met; and meanwhile, various built-in sensors monitor the running state of the rotary table in real time, and a braking function can be quickly triggered in an emergency, so that the safety of a user and equipment is ensured. In addition, the rotary table is simple in structural design, easy to disassemble and assemble, and convenient for daily maintenance and operation. According to the utility model, an efficient, safe and convenient cake decoration tool is provided for a user, and the technical progress in the field of food decoration and display is promoted.

A power tool includes a housing, an electric motor disposed within the housing, a first printed circuit board assembly configured to selectively supply electric current to the electric motor, causing the electric motor to activate and drive a tool element, and a battery receptacle configured to support a removable battery pack. The battery receptacle has a battery terminal block electrically connected to the battery pack to supply electrical current to the first printed circuit board assembly. The power tool further includes a second printed circuit board assembly electrically connected between the first printed circuit board assembly and the battery terminal block. The second printed circuit board assembly has a fuse and a thermistor configured to detect a temperature of the fuse.

A second gear meshes with a first gear and is connected to an output member so as to rotate integrally with each other. A rotor, a planetary gear mechanism, and the first gear are disposed on a first axis in a described order from an axial first side toward an axial second side. A connecting member, a differential gear mechanism, and the second gear are disposed on a second axis parallel to the first axis in a described order from the axial first side toward the axial second side. The planetary gear mechanism has a smaller diameter than a rotating electric machine and a larger diameter than the first gear. The differential gear mechanism has a smaller diameter than the second gear and larger diameter than the connecting member.

The application provides a power assembly with reducer side wire outlet, a double-motor power assembly and an electric vehicle. The power assembly comprises an intermediate integrated shell, a resolver sensor, a motor and a reducer. The intermediate integrated shell comprises a partition plate and two circumferential shells. One circumferential shell is used for fixing a motor stator of the motor and accommodating a motor rotor of the motor, and comprises at least one through hole. The other circumferential shell is used for accommodating a gear set of the reducer. The partition plate is used for separating the inner cavities of the two circumferential shells. The partition plate comprises a shaft hole and at least one wire outlet hole. The shaft hole and the at least one wire outlet hole are used for connecting the inner cavities of the two circumferential shells. The shaft hole is coaxially arranged with an input shaft of the reducer or a motor shaft of the motor. The distance between the at least one wire outlet hole and the center point of the shaft hole is greater than the inner diameter of a resolver stator of the resolver sensor. The power assembly provided by the application has a smaller axial dimension.

The application relates to the technical field of conveying devices, and discloses a roller motor, which comprises a roller and a driving piece, the driving piece is used for driving the roller to rotate, and the roller motor further comprises: a first detection assembly, which comprises a first magnet and a first Hall element, the first magnet is fixedly connected to the rear end of an output shaft of the driving piece, the roller is fixedly connected to the front end of the output shaft of the driving piece, and the first Hall element is used for sensing the magnetic field change of the first magnet to detect the rotating speed of the output shaft; and a second detection assembly, which comprises a second magnet and a second Hall element, the second magnet is fixedly connected to the roller, and the second Hall element is used for sensing the magnetic field change of the second magnet to detect the rotating speed of the roller. The roller motor can detect the rotating speeds of the driving piece and the roller simultaneously, and the control precision of the rotating speed of the roller can be improved in combination with a control mechanism.

The utility model provides a cooling system of an electric engine and application of the cooling system, the electric engine comprises a power motor and a motor controller, and the motor controller is integrated in the power motor; the cooling system comprises a flow channel, a first branch, a second branch and a flow channel control valve, the flow channel control valve is integrated in the motor controller, cooling liquid in the flow channel is divided into the first branch and the second branch through the flow channel control valve, and the flow channel control valve is used for controlling the flow of the cooling liquid in the first branch and the second branch. The cooling liquid flowing through the first branch is used for cooling the motor controller, and the cooling liquid flowing through the second branch is used for cooling the power motor. The motor controller and the power motor are independently cooled through cooling liquid flowing through the two branches connected in parallel, the flow of the cooling liquid of each branch is controlled through the flow channel control valves, it is ensured that the power motor and the motor controller are fully cooled, the cooling efficiency is improved, then the system operation efficiency is improved, and the heat dissipation requirement of a motor engine in an aircraft is met.

A power tool includes a working component configured with the maximum output rotational speed; an electric motor configured with the maximum rotational speed; a transmission assembly configured with a transmission ratio; a driver circuit including one or more drive switches; and a controller for outputting a control signal to control the one or more drive switches of the driver circuit. At least one drive switch in the driver circuit includes a wide bandgap semiconductor switch, and the ratio of the required maximum rotational speed of the electric motor to the maximum rotational speed of the electric motor is less than or equal to 0.9. The electric motor system of the power tool has good electrical performance.

The utility model relates to a motor assembly which is used for toys and education systems. The motor assembly includes a body, a control circuit, a first electric motor, a second electric motor, a first shaft, and a second shaft. A first electric motor is configured to drive the first shaft by rotational motion and a second electric motor is configured to drive the second shaft by rotational motion. A control circuit is configured to independently control driving of the first electric motor and the second electric motor to provide independent rotational motion of the first shaft and the second shaft. In addition, the utility model further relates to various toys or education systems.

A military vehicle includes a cabin, an engine, an electric generator coupled to the engine, an energy storage system, and an export power system configured to facilitate exporting electrical power from at least one of the energy storage system or the electric generator. The export power system is configured to facilitate at least one of (a) wirelessly powering a device external to the cabin or (b) connecting the military vehicle to a ring-bus system to provide power to the ring-bus system.