15140results about "Cooling/ventillation arrangement" patented technology

The invention discloses a dredge pump control system and method for river regulation, and relates to the technical field of dredge pump control. The dredge pump control system comprises a sensing module, a centralized control module, an energy-saving execution module and a control parameter recording module; the sensing module is arranged on a multi-element sensor at a key part of a dredge pump for acquiring data, and the data is pre-processed by a microprocessor and then transmitted to the centralized control module at a high speed by a wireless transmission module, so that an accurate basis is provided for system control; according to the invention, by integrating multiple sensors and an advanced control algorithm, the dredging efficiency and accuracy of the dredge pump of the dredger are obviously improved; the sensing module can monitor key parameters of the dredge pump in real time, such as suction pressure, discharge flow, pump shaft temperature and sediment concentration, and it is ensured that the running state of the dredge pump is comprehensively known; and the centralized control module dynamically optimizes a control sequence by using a model predictive control and fuzzy logic control algorithm so as to adapt to variable working conditions.

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).

The invention relates to an integrated oil cooling hub speed reduction electric wheel which comprises a motor, a planetary gear speed reducer and a bearing system which are arranged in the axial direction, and the planetary gear speed reducer is arranged in the motor and integrated with a brake. The bearing system comprises a rotor supporting bearing used for supporting a motor rotating system and a hub bearing used for supporting a wheel rotating system, the motor, the planetary gear reducer and the rotor supporting bearing are designed in an integrated oil cooling mode, and cavities where the motor, the planetary gear reducer and the rotor supporting bearing are located are communicated with one another. Cooling liquid cools and lubricates the motor, the planetary gear reducer and the rotor supporting bearing at the same time. Compared with the prior art, the electric wheel is compact in structure, the number of sealing pieces of the electric wheel can be reduced on the premise that the electric wheel has good structural rigidity, the axial size of an electric wheel assembly is reduced, and the electric wheel has the advantages of being good in cooling effect and easy to maintain.

The invention provides a cooling structure of a motor stator, an oil-cooled motor and a vehicle, and belongs to the technical field of automobiles. A guide oil duct and a stepped oil injection duct are arranged on a stator core; the middle of the stator iron core is provided with an oil inlet groove surrounding the stator iron core in the circumferential direction, and a cooling medium enters the flow guide oil channel through the oil inlet groove in the middle of the stator iron core and obliquely injects oil to the stator windings at the two ends of the stator iron core through the stepped oil injection channel. According to the invention, the oil path is directly arranged on the stator core and the stepped oil injection channels are symmetrically arranged, and the cooling medium can be intensively and obliquely sprayed to the surface of the stator winding through the stepped oil injection channels, so that the heat dissipation effect and the heat dissipation efficiency are improved, and the thermal load capacity of the motor and the working efficiency of the motor are further improved; and faults of the motor caused by non-uniform cooling, overhigh local temperature rise and temperature gradient are reduced. The structure is simple, and the overall manufacturing and maintenance cost is reduced; meanwhile, the overall size of the motor is reduced, and overall light weight is facilitated.

The invention discloses a liquid cooling heat dissipation ducted fan which comprises a duct, a propeller, a motor, a supporting rib plate, a propeller hub shell and a liquid cooling mechanism. The propeller hub shell is fixed in the duct through the supporting rib plates; a motor and a liquid cooling mechanism are arranged in the propeller hub shell; a rotor output shaft of the motor is connected with a propeller and a fairing through a coupler. The fairing is arranged on the propeller in a sleeving mode, and an opening is formed in the fairing so that blades of the propeller can stretch out. The liquid cooling mechanism is at least partially formed in the propeller hub shell and the supporting rib plate, and the propeller hub shell and the supporting rib plate are of a sandwich structure to form a cooling liquid circulation channel of the liquid cooling mechanism. According to the liquid cooling heat dissipation ducted fan, the cooling liquid flow channels are arranged in the propeller hub shell and the supporting rib plates, the cooling liquid is cooled through the structure of the cooling liquid while the cooling liquid dissipates heat of the motor, the cooling liquid circulates in the propeller hub shell and the supporting rib plates, the motor is continuously cooled, and the heat dissipation efficiency is improved.

The invention discloses a high-voltage motor bearing cooling device and method, belongs to the technical field of bearing cooling, and aims to solve the problems of poor heat dissipation effect and poor heat dissipation uniformity of an existing bearing. The cooling area is increased by arranging the multiple sets of cooling channels surrounding the mounting groove, when the motor operates at a low load, the flow channel adjusting mechanism controls cooling liquid to enter the first flow channel, then the adjusting ring is driven to rotate through the rotating mechanism, most of the cooling channels are blocked by the blocking blocks on the adjusting ring, and the cooling liquid only circulates in the penetrating groove, so that the cooling effect is improved. And along with rotation of the adjusting ring, the multiple cooling channels circularly dissipate heat, slow and uniform heat dissipation and a high-load running state of the motor are realized, the flow rate of the pumped cooling liquid is changed, and the cooling liquid is automatically switched to the second flow channel with a large cross section area by the flow channel adjusting mechanism, so that the adjusting ring is far away from the heat dissipation channels, and all the heat dissipation channels participate in heat dissipation; the flow of cooling liquid and the heat dissipation area are greatly increased, and the heat dissipation requirement of the bearing under high load is effectively met.

The joint module comprises a motor and a harmonic reducer, the motor comprises a shell, a stator assembly and a rotor assembly, the shell comprises an outer shell and an inner oil cavity, a first oil port and a second oil port are formed in the two ends of the inner oil cavity respectively, the stator assembly is fixed to the inner side of the inner oil cavity, and the rotor assembly is fixed to the outer side of the inner oil cavity. The rotor assembly comprises a rotating shaft and a rotor hub arranged on the rotating shaft, the rotor hub comprises an inner shell and an outer shell, the inner shell and the outer shell are fixed through a connecting piece, an oil stirring channel is formed, the harmonic reducer comprises a wave generator, a flexible gear, a supporting bearing outer ring and a supporting bearing inner ring, and the rotating shaft is connected with the wave generator. The wave generator drives the flexible gear to deform, the flexible gear is fixed to the rear end cover, the outer ring of the supporting bearing is fixed to the rear end cover, and a gear ring is arranged on the inner wall of the inner ring of the supporting bearing and is in staggered tooth transmission with the flexible gear. Oil liquid is in direct contact with a stator heating source, the stator heat dissipation efficiency is improved, the rotor hub drives the oil liquid to flow, and the heat exchange efficiency is improved.

The invention discloses a stator excircle staggered oil path cooling motor, which comprises a stator assembly, a rotor assembly, an end cover, a casing and an oil injection assembly, and is characterized in that the stator assembly comprises a plurality of laminated punching sheet lamination segments, grooves are circumferentially distributed in the outer edges of punching sheets, and the lamination segments are rotated by an angle and then are stacked, so that the grooves of the adjacent punching sheet lamination segments are communicated with each other and are circumferentially staggered with each other; the two ends of the casing are connected with the end covers respectively, the stator assembly is fixed in the casing, a cooling cavity is formed among the periphery of the stator assembly, the casing and the end covers, the rotor assembly penetrates through the inner side of the stator assembly, the two ends of the rotor assembly are rotationally connected with the end covers respectively, and a liquid cooling oil channel communicated with the cooling cavity is formed in the inner side of the rotor assembly; an oil injection assembly is arranged between the end portion of the stator assembly and the end cover, and a staggered oil channel formed by the staggered grooves in the outer circle of the stator iron core and the machine shell communicates the oil injection assembly with a cooling cavity formed by the machine shell and the end cover. The motor has the advantages of simple structure, few punching sheet types, small influence on motor torque characteristics, remarkable cooling effect and the like.

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 discloses an axial flux motor, an electric drive system and a vehicle. The axial magnetic flux motor adopts a single-stator and double-rotor structure in which a stator is arranged in the middle and rotors are arranged on two sides, and comprises a stator assembly, and a first rotor assembly and a second rotor assembly which are distributed on two sides of the stator assembly, and the first rotor assembly and the second rotor assembly are respectively connected with the stator assembly through a first rotor bearing and a second rotor bearing. The single-stator double-rotor axial flux motor only comprises one stator assembly, so that the energy loss is low, the heat productivity is low, the power density is higher, and the energy conversion efficiency is higher. One end of the rotor shaft is fixedly connected with the output part of the first rotor assembly, and the other end of the rotor shaft is in transmission connection with the output part of the second rotor assembly. The tolerance of the relative positions of the two rotor assemblies is smaller, the magnetic poles of the magnetic steel of the two rotor assemblies can be in one-to-one correspondence, and the difficulty of motor calibration after the motor assembly is assembled is reduced.

The invention relates to the technical field of electric workover rig thermal management, and discloses a workover pump truck electric drive thermal management method and system, and the system comprises a multi-source temperature collection module, an operation state monitoring module, a thermal management analysis module, a strategy matching engine module, a dynamic execution control module, a feedback optimization module, and a prediction decision module. The method comprises the following steps: acquiring environment temperature, motor temperature, battery temperature and cooling liquid temperature data; obtaining motor power, battery current and a vehicle operation mode; generating a thermal management demand level based on the temperature and the operating parameters; matching natural cooling, air cooling or liquid cooling strategies according to grades; cooling operation is executed, the temperature change rate is calculated in real time, and the cooling intensity is dynamically adjusted; when the threshold value is exceeded, liquid cooling cooperative control is started; predicting a thermal load trend through an LSTM model, generating a dynamic cooling plan, and optimizing an execution priority; and a thermal management efficiency evaluation report is output, so that the operation reliability and energy efficiency of the electrically-driven workover pump truck are improved.

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 the technical field of motors, and particularly discloses an efficient heat dissipation high-power motor, which comprises a casing, and a rotor assembly, a stator assembly and a rotating shaft which are arranged in the casing, and is characterized in that the stator assembly comprises a stator iron core for conducting magnetic flux and a stator winding which is wound on the stator iron core and is used for generating a magnetic field; the rotor assembly is rotationally matched with the stator assembly through the rotating shaft; the high-power motor further comprises a heat dissipation mechanism, and the heat dissipation mechanism is used for conveying refrigerating fluid to exchange heat with the stator iron core. The rotor assembly comprises a rotor seat and a magnet arranged on the rotor seat, the rotor seat is arranged on the rotating shaft in a sleeving mode, a heat dissipation air channel communicated with the outside of the machine shell is arranged in the rotor seat, and the heat dissipation air channel is used for heat dissipation of the rotor assembly. According to the invention, the heat dissipation mechanism is arranged to dissipate heat of the stator assembly, and air cooling heat dissipation is carried out on the interior of the rotor assembly through the heat dissipation air duct, so that rapid transfer and dissipation of heat are realized, and the operation stability of the motor is improved.

The invention relates to the technical field of electric vehicles, and provides a cooling system for a hub motor, the hub motor and an electric vehicle, the cooling system for the hub motor comprises a base and a transmission shell, the base is internally provided with a first cavity and a second cavity, the second cavity is provided with a gear transmission assembly, the side wall of the first cavity is provided with a first cooling liquid flow channel, and the side wall of the second cavity is provided with a second cooling liquid flow channel; a second cooling liquid flow channel is formed in the side wall of the second cavity; the transmission shell is of a cylindrical structure with the first end open and the second end closed, the transmission shell is arranged outside the second cavity in a sleeving mode, the first end of the transmission shell is rotationally connected with the machine base in a sealed mode, the transmission shell is connected with the hub, an oil cavity is formed between the inner side wall of the transmission shell and the outer side wall of the machine base, and the oil cavity is communicated with the second cavity. Through the arrangement, the second cooling liquid flow channel can be used for cooling the second cavity, gear oil in the second cavity can enter the oil cavity, and the second cooling liquid flow channel can also be used for cooling the gear oil in the oil cavity, so that the problem of over-temperature failure of the motor and the gear can be avoided.

The invention relates to the technical field of generators, in particular to a shaft generator for a ship, which comprises a generator body, a cooling structure, an adjusting structure, a protection structure, a storage structure and a maintenance structure, the cooling structure is arranged to dissipate heat of the generator body, so that the device is always in a suitable temperature range, stable performance output is ensured, faults and performance attenuation caused by overheating are avoided, the aging speed of parts is effectively reduced, the service life of the device is prolonged, and the maintenance cost is reduced. The adjusting structure can move up and down and left and right and can rotate to adjust the angle, accurate butt joint with another device can be achieved, the situation that installation is inconvenient due to deviation between the adjusting structure and output shafts of other devices is avoided, and the protection structure can resist impact of objects falling accidentally in the sailing process; therefore, the shell and key parts of the generator body are prevented from being damaged, common maintenance tools and replaced parts can be conveniently stored through the arrangement of the storage structure, and rapid searching is facilitated during maintenance.

The invention relates to a cooling structure for an ultraprecise linear motor and belongs to the technical field of linear motors. The cooling structure solves the problem of proneness to heat exchange with environment caused by high side temperature of two-side surface-mounted cooling structures of existing linear motors. The cooling structure comprises a winding supporting portion, a winding and a heat conductive portion, wherein the winding is fixed on the surface of the winding supporting portion, the heat conductive portion is arranged on the surface on the outer side and fixedly connected with the winding supporting portion, the heat conductive portion is a copper foil ring which fits the outer profile of the winding and is sleeved and fixed on the surface on the outer side of the winding, or the heat conductive portion is a copper foil heat conductive ring formed by arraying multiple copper foil sections in a dispersed manner, the copper coil heat conductive ring fits the outer profile of the winding, and each copper coil section is fixed on the surface on the outer side of the winding. The cooling structure for the ultraprecise linear motor is suitable for cooling of linear motors.

The present application discloses a coaxially integrated servo motor pump with integrated drive control functions, comprising a motor pump housing, a controller housing, and an electrical connector. The motor pump housing is provided with a blind hole, a first cavity for accommodating a plunger pump assembly, and a second cavity for accommodating a servo motor assembly, wherein the plunger pump assembly and the servo motor assembly are connected via a rotating shaft. The controller housing is connected to one end of the motor pump housing, and a drive controller is provided within the controller housing. The blind hole communicates with the second cavity, and the electrical connector is sealed and connected to the blind hole, and the electrical connector is electrically connected to the servo motor assembly and the drive controller. The distribution plate and the sealing assembly are respectively sealed with both ends of the motor pump housing. Cooling is achieved through a cooling oil channel, which connects from one end of the motor pump housing near the plunger pump assembly to the second cavity and then divides into two paths, one path passing through the center of the rotating shaft, and the other path connecting to the first cavity and passing through the distribution plate. The coaxial integration of the drive control functions is achieved, and the cooling effect is good.

The invention relates to the technical field of motor heat dissipation, and discloses a lightweight motor heat dissipation structure, which comprises a shell, a stator structure, a rotor structure and a heat dissipation fan, cooling oil in the liquid storage tank is guided into the annular guide groove, the multiple sets of vortex grooves are diffused to the outside in a vortex mode, the cooling oil can be sprayed out to the turbofan blades at the inner diameter position in an accelerated mode through the conical liquid outlet holes in the inner wall of the annular guide groove, and therefore the turbofan blades at the lower portion can conduct vortex rotation; the introduced cooling oil can quickly flow from one side of the stator structure to the other side along the coil gap, so that the flow speed of the cooling oil in the inner cavity of the shell can be accelerated from one side of the stator structure, and the cooling and heat exchange efficiency of the compact coil in the stator structure is improved; the turbofan blades and the vortex grooves can enable cooling oil liquid to be diffused in a vortex mode to flow in the same direction with a rotating shaft in the rotor structure, and therefore the situation that the cooling oil liquid is guided into an inner cavity of the machine shell and influences the rotating speed of the rotor structure is avoided.

Some embodiments of the present disclosure provide an oil cooled motor heat dissipation structure and a motor. The oil cooled motor heat dissipation structure includes oil spray parts which are arranged at two ends of a stator core. An outside diameter of the oil spray part is not less than an outside diameter of the stator core, and the oil spray part is in contact with a case, an outer surface of the stator core, the case and the oil spray parts construct a cooling medium flow chamber, so as to facilitate the flowing of a cooling medium in the cooling medium flow chamber along the outer surface of the stator core. The oil spray part is provided with an oil spray channel. One end of the oil spray channel is communicated with the cooling medium flow chamber, the other end is communicated with a chamber inside the motor.

The invention discloses a hybrid cooling structure of a multi-torque-component axial flux motor and the axial flux motor, and belongs to the technical field of axial flux motors, the hybrid cooling structure comprises a casing liquid cooling structure, an in-slot cooling structure and a heat conduction structure; the casing liquid cooling structure comprises a cooling flow channel arranged in a casing, and the cooling flow channel is provided with a cooling flow channel inlet and a cooling flow channel outlet. The in-slot cooling structure comprises a first heat-conducting fin and a second heat-conducting fin which are embedded into the stator slot, and the first heat-conducting fin is arranged between the first permanent magnet and the stator winding and is in contact with the first permanent magnet and the stator winding; the second heat-conducting fin is located between the second stator permanent magnet and the stator winding and makes contact with the second stator permanent magnet and the stator winding, one ends of the first heat-conducting fin and the second heat-conducting fin make contact with the stator iron core, and the other ends extend into the machine shell; the heat conduction structure comprises a heat conduction ring located between the machine shell and the machine shell. Heat dissipation capability is improved, and overhigh temperature rise of the stator and rotor iron cores and the stator and rotor permanent magnets of the motor is avoided.

A propulsion system, comprising: a motor assembly including a stator and a rotor, a heat exchanger configured to receive air to cool a liquid, and a thermal plate including one or more channels configured to convey the liquid from the heat exchanger to the motor assembly. The heat exchanger is mechanically and fluidically coupled to the thermal plate.

The invention relates to the technical field of axial flux motors, in particular to a stator cooling structure, a stator assembly and an axial flux motor, the stator cooling structure comprises a shell and a partition plate, the shell is internally provided with a cooling cavity for accommodating a plurality of stator units, and the shell is connected with an inlet for inputting a cooling medium and an outlet for outputting the cooling medium; the partition plate is connected into the shell and divides the cooling cavity into a first cavity and a second cavity in the thickness direction. The partition plate is provided with a first via hole matched with the stator unit and a plurality of channels communicated with the first cavity and the second cavity, and reciprocating flow of a cooling medium between the first cavity and the second cavity is achieved through the channels. The stator heat dissipation effect can be improved, and local high temperature in the stator is prevented.

A cooling system for a drive device with several electric machines, the cooling system including a hydraulic circuit for a coolant including a cooling part in a gearbox of the drive device for cooling the gearbox, and an air / coolant heat exchanger including cooling walls forming channels for circulating coolant for the cooling thereof, an air cooling circuit including a plurality of fans, rotationally coupled to the gearbox, a cooling part between the cooling walls of the air / liquid heat exchanger, wherein the air sucked in and propelled by the fans circulates by sweeping over the cooling walls in order to cool them.

The utility model relates to the technical field of motor stator cooling, in particular to a cooling structure of a motor stator, which comprises the motor stator, a winding groove and an outer wall filling groove are arranged on the motor stator, outer wall heat conduction paste is filled in the outer wall filling groove, a motor shell is sleeved outside the motor stator, and a heat conduction insertion sheet is inserted in the outer wall filling groove. The motor shell is provided with a motor base and a cover plate screw groove, the motor shell is provided with a motor inner cavity, the side wall of the motor inner cavity is provided with an inner wall filling groove, the inner wall filling groove is filled with inner wall heat conduction paste, the outer wall of the motor shell is provided with heat dissipation fins, the heat dissipation fins are provided with flow guide heat dissipation holes and heat dissipation strips, and the heat dissipation strips are provided with heat dissipation film layers. Stable contact between the outer wall of the motor stator and the inner wall of the motor shell is guaranteed, heat generated by working of the motor stator is rapidly and effectively conducted, dissipated and cooled, and the situation that thin and sharp heat dissipation fins rub the skin of a worker can be avoided.

A drive unit for a vehicle includes an electric motor, an output shaft, and a housing. The electric motor includes a rotor shaft having an inner surface with a hollow accessible via an opening at an axial end of the rotor shaft and an outer surface opposite the inner surface. The output shaft extends into the hollow through the opening. The housing houses the electric motor and defines a fluid flow path for fluid. The housing has a collar portion about the output shaft, a first holding portion on a first axial side of the collar portion and having baffles that are circumferentially offset from each other, a second holding portion on a second axial side of the collar portion opposite the first axial side, such that the collar portion is positioned axially between the first and second holding portions, and conduits extending between the first and second holding portions.

An electric drive for a vehicle comprises a housing, an electric machine with a stator connected to the housing and including stator end-windings, a rotor rotatable relative to the stator, and a driveshaft connected to the rotor and rotatably supported in the housing about an axis of rotation, a transmission to transmit a rotary movement from the driveshaft to drive a driveline of the vehicle, and a hydraulic circuit for circulating a fluid.

The invention relates to an aircraft electric drive oil cooling structure which comprises an outer rotor assembly, a stator assembly, a controller assembly, an oil pump and a heat dissipation assembly, the stator assembly comprises a stator shell and a winding, a sealing cover is further fixed to the outer side of the winding, and a cooling cavity is formed between the sealing cover and the stator shell; a bottom plate is further arranged at the bottom of the stator shell, the controller assembly is fixed in a mounting cavity formed by the bottom plate and the stator shell and comprises a circuit board and a cooling plate which are close to each other, the circuit board is connected with the winding, an oil duct A is further arranged on the bottom plate, an oil inlet pipe and an oil outlet pipe are arranged on the cooling plate, and an oil duct B communicated with a cooling cavity is further arranged on the bottom plate; the heat dissipation assembly comprises a heat dissipation fin set and a fan assembly, the heat dissipation fin set and the oil pump are both fixed to the lower portion of the bottom plate, heat dissipation fins form a ring and are arranged outside the oil pump in a surrounding mode, the heat dissipation fin set, the oil pump and the bottom plate are communicated with one another, and the fan assembly is fixed to the lower portion of the heat dissipation fin set. Efficient, light-weight, high-integration-level and reliable heat dissipation of the electric drive of the aircraft is achieved.

The invention, which relates to the technical field of the motor, discloses a variable-frequency and variable-speed permanent magnet motor of a stator core heat dissipation structure without a casing, comprising a stator core, an end cover, a motor shaft, a rotor, an axial fan, a heat dissipation channel, a spacer ring, a heat dissipation port, a protective cover, a baffle plate and a mounting seat, the baffle plate is provided with a communication port corresponding to a mounting cavity and the heat dissipation port; the low-temperature shrinkage stress prevention assembly is mounted on the baffle and used for driving the baffle to rotate, so that the opening part of the heat dissipation opening is opened and closed; and the air flow adjusting assembly is arranged on the mounting seat and is used for adjusting the air flow in the heat dissipation channel based on the rotating speed of the motor shaft. According to the invention, the air flow adjusting assembly is used for adjusting the air flow rate in the heat dissipation channel when the rotating speed of the motor shaft changes, so that the air flow rate in the heat dissipation channel is increased when the rotating speed of the motor shaft is reduced, and thus the air flow rate in the heat dissipation channel is relatively high when the rotating speed of the motor shaft is reduced; and therefore, the influence on the gas flowing effect is small.

The invention relates to the technical field, provides a notch liquid cooling structure of a flat wire motor stator, and realizes high-efficiency and low-consumption motor stator cooling through an accurately-positioned full-coverage liquid cooling structure. In order to achieve the purpose, the motor comprises a stator iron core, closed iron core wire grooves are evenly distributed in the inner edge of the stator iron core, wires forming windings are inserted in the iron core wire grooves, the wires are tightly attached to the outer diameter ends of the iron core wire grooves, oil way channels are formed between the wires and the inner diameter ends of the iron core wire grooves, the two ends of the stator iron core are provided with end rings, and the two ends of the stator iron core are provided with end rings. The end ring wraps the wire, and the end ring and the oil path channel form a closed oil path space. Due to the adoption of the technical scheme, the oil path channel formed between the wire and the inner diameter end of the iron core wire slot is matched with the closed oil path space formed by the end ring and the oil path channel, and the position of the oil path channel is used for accurately cooling the wire with the highest heating.