42results about How to "Reduce copper consumption" patented technology

The invention discloses a novel vortex electronic water pump for a thermal management system of an electric vehicle. The novel vortex electronic water pump comprises a pump body sub-component, a motor body sub-component and a water pump motor controller, the vortex pump shell, the vortex pump waterproof sleeve and the motor shell are connected and fixed through five screws; and mechanism assembly of the pump body sub-component and the motor body sub-component is completed. A water pump motor controller is connected and fixed in a cavity at the rear end of a motor shell through screws, then a three-phase power supply terminal connecting line and a power supply connector terminal connecting line of a confluence plate binding post are welded and fixed with a circuit board of the water pump motor controller, and a rear cover and the motor shell are screwed and fixed through four screws. The vortex electronic water pump has the working characteristics of large flow, high lift, low noise, safety and reliability, is an energy-saving and environment-friendly high-tech product, and is particularly suitable for an electric vehicle thermal management system with higher requirements on modularization, light weight and integration; the vortex electronic water pump is compact in structure, good in sealing performance, low in cost and easy to assemble and maintain.

The utility model discloses a stator assembly, a motor and a household electrical appliance, and relates to the technical field of motors, and the stator assembly comprises a stator core, a plurality of insulation frames and insulation sheets. The sinking grooves are formed in the two ends of the stator core along the axis respectively, part of structures, located at the two ends of the stator core, of the insulating frames are installed in the sinking grooves, the two ends of the insulating sheets are connected to the two insulating frames respectively, and the insulating sheets are arranged around the inner sides of the winding grooves. The insulation frame does not occupy the area of the winding groove, the thickness of the insulation sheet is smaller than that of the insulation frame, the area of the winding groove is maximized while electrical insulation is guaranteed, and therefore maximization of motor power is achieved under the condition that the outer contour size of the stator assembly is not changed. And the insulation sheets are connected with the insulation frame to ensure the creepage distance, and meanwhile, the span of the winding in the axial direction is reduced, and the copper consumption of the winding is reduced, so that the copper consumption and the manufacturing cost are reduced, and high energy efficiency and low cost of the motor are realized.

The invention discloses a contactor magnetic core, a contactor electromagnetic assembly and a contactor. The contactor magnetic core comprises a static magnetic core which is suitable for being fixed on a magnetic conductive plate of the contactor and is provided with a main body part which is suitable for being inserted into a coil framework of the contactor; and the movable magnetic core is suitable for being movably inserted into the coil framework and is provided with a flange part positioned at the upper end of the movable magnetic core. When the static magnetic core and the movable magnetic core are inserted into the coil framework, the main body part of the static magnetic core faces the flange part of the movable magnetic core, and the diameter of the main body part of the static magnetic core is slightly larger than that of the flange part of the movable magnetic core, so that the electromagnetic attraction force between the static magnetic core and the movable magnetic core is increased. According to the invention, the number of turns and the copper consumption of the coil can be reduced while enough electromagnetic attraction is ensured, so that the cost and the size of the contactor can be reduced.

The invention provides an axial magnetic flux type hybrid excitation switched reluctance motor which comprises two stator ring assemblies and a rotor ring assembly arranged between the two stator ring assemblies, and an air gap is formed between the stator ring assemblies and the rotor ring assembly. The stator ring assembly comprises a stator iron core, auxiliary excitation permanent magnets and armature windings, the stator iron core is provided with a plurality of stator main poles and auxiliary poles which are distributed in a staggered mode, each stator main pole is wound with one armature winding, the auxiliary excitation permanent magnets are arranged on the stator grooves close to the air gap side, and the auxiliary excitation permanent magnets are arranged on the stator grooves close to the air gap side. And the armature winding is sealed in the stator slot. The auxiliary excitation permanent magnets are added between the stator main poles and the auxiliary poles, so that the air gap flux density during conduction and the magnetic field of the switched reluctance motor are improved, the torque density and the power density of the switched reluctance motor are improved, and meanwhile, the excitation current of the armature winding is reduced; and the average torque of the switched reluctance motor is increased, a main magnetic circuit is shortened, and the operation efficiency of the switched reluctance motor is further improved.

This invention discloses a six-phase reactor for an energy storage converter, belonging to the field of reactor technology. It includes a first reactor assembly and a second reactor assembly. The first reactor assembly includes a first base, which is composed of a U-shaped support plate and an L-shaped support plate, allowing for independent and stable placement. The second reactor assembly includes a second base, mainly composed of an L-shaped support plate, which is temporarily stabilized during manufacturing using a detachable support fixture. After each reactor assembly independently completes overall impregnation and drying, the support fixture is removed. Then, the surfaces of the terminals and connectors to be connected in parallel are polished and the paint is removed. The two bases are then fixed using base connectors, and the corresponding phase terminals are electrically connected in parallel using a phase-parallel connector to form a six-phase output. This invention, through differentiated base design and fixture assistance, allows the two reactors to be impregnated separately before being connected in parallel, balancing impregnation process quality and electrical connection reliability, and also helps to reduce the overall size of the unit.

The present invention provides a short-pitch motor stator, including an iron core and a stator winding, wherein the iron core is provided with 48 stator slots, and insulating paper is arranged in the stator slots, and the insulating paper sequentially separates the stator slots into a first layer, a second layer, a third layer and a fourth layer from the outside to the inside in the radial direction of the iron core, and the stator winding has eight magnetic poles and is a six-phase winding, and each phase of the stator winding includes a first winding coil, a second winding coil, a third winding coil and a fourth winding coil respectively wound on the iron core. The stator winding of the present invention has a relatively compact structure, and helps to reduce the end height of the winding, thereby reducing the volume of the motor without changing the power. In addition, the use of a six-phase winding can expand the selection range of voltage and current, adapt to a variety of controllers, thereby optimizing the performance and cost of the motor system, and can improve the efficiency and torque density of the motor, and at the same time has the characteristics of strong fault tolerance and high reliability.

The application discloses a motor power supply connecting structure and an assembling method, which comprise a stator winding, a plastic bus plate is arranged on the stator winding, three-phase terminals are connected on the plastic bus plate, a plurality of enameled wires extending outward are arranged on the stator winding, the enameled wires are embedded on the inner side of the plastic bus plate, and one end of each enameled wire is connected with the three-phase terminals. A plurality of wire grooves and metal buckles are arranged on the plastic bus plate to replace the plastic-coated bus bar, the connection between the motor stator windings is realized through the metal buckles, and the plastic bus plate is connected with the three-phase terminals through the wire outlet, so that the volume is small, the transmission path is high in flexibility, the product is small in size and light in weight, the copper bar is removed, the enameled wires are directly connected, the copper consumption can be effectively reduced, and the cost can be effectively reduced.

The present invention provides a full-pitch motor stator, comprising an iron core and a stator winding wound on the iron core. Since the winding coils wound in the same stator slot belong to the same phase, and in the same stator slot, the fourth layer and the second layer are wound by the first winding coil, and the first layer and the third layer are wound by the second winding coil, two neutral point connecting lines in the same phase are connected in parallel, the structure is relatively compact, and it is helpful to reduce the end height of the winding, thereby reducing the volume of the motor without changing the power, and achieving high power and relatively small volume. In addition, the use of six-phase windings can expand the selection range of voltage and current, adapt to a variety of controllers, thereby optimizing the performance and cost of the motor system, and can improve the efficiency and torque density of the motor, while having the characteristics of strong fault tolerance and high reliability.

The present invention discloses a multi-phase winding of a permanent magnet motor stator. In the multi-phase winding, each phase winding is formed by connecting one coil or multiple coils, each coil includes a double-layer conductor element at the head end and a single-layer conductor element at the end and a plurality of intermediate double-layer conductor elements arranged between the two. The upper (or lower) conductors of all double-layer conductor elements are connected in sequence through the end conductors, and after being connected to the end element, the lower (or upper) conductors of all double-layer conductor elements are connected in reverse order. Each element corresponds to a stator slot, and there is an insulating medium between the upper and lower conductors of the double-layer conductor elements located in the same stator slot, and the number of stator slots spanned by adjacent elements in the same coil is the same. The winding of the present invention has the advantages of small leakage reactance, small conductive resistance, small heat loss, etc., which is of great significance to improving the power factor, efficiency and power density of the motor. The coil topology can be extended and expanded according to the number of stator slots, and the present invention is particularly suitable for multi-pole and multi-phase permanent magnet motors.

The application relates to the technical field of energy-saving motors, in particular to a heat-dissipation type permanent magnet motor which comprises a machine shell, a stator arranged in the machine shell, a rotor rotatably supported in the machine shell through a rotating shaft, and a heat-dissipation unit arranged on the machine shell and used for accelerating heat dissipation of the motor. The cooling medium is directly led to pass through the surface of the permanent magnet on the rotor by the rotation of the spiral outer circulation cavity, the permanent magnet is directly cooled, the copper consumption is reduced, energy saving is realized, the cooling medium is driven into the spiral inner circulation cavity by the rotation of the spiral outer circulation cavity, the secondary heat exchange is completed with the stator core and the winding end part, the average temperature of the stator core is reduced, the iron loss is reduced, the local hot spot temperature of the winding end part is reduced, the resistance is reduced, the copper consumption is further reduced, the cooling medium after absorbing heat is discharged into the spiral cooling ribs through the exhaust port by the centrifugal fan and the spiral outer circulation cavity, and the third heat exchange is carried out with the inner wall of the machine shell and the outer wall of the core of the stator.

The invention provides a multi-port shaft-diameter mixed magnetic flux permanent magnet motor, and belongs to the technical field of motors. The permanent magnet motor comprises an axial stator, an axial rotor and an excitation stator which are coaxially arranged in sequence; the permanent magnet motor further comprises a radial rotor and a radial stator which are concentric with the excitation stator, and the radial rotor is located between the excitation stator and the radial stator. According to the permanent magnet motor, the radial stator and the axial stator share a single excitation source of the excitation stator, the two permanent magnets of neodymium iron boron and ferrite are embedded in the excitation stator, radial and axial mixed magnetic flux can be generated through structural combination of the excitation convex teeth and the L-shaped permanent magnets, and the utilization rate of the permanent magnets and the power density of the motor are effectively improved.

The utility model relates to a frame type switching device, which comprises an outer shell, an arc extinguishing device and a static end line bank, the outlet of the arc extinguishing device is fixed at the first side end part of the outer shell, and the static end line bank is led out from the first side end part of the outer shell. According to the utility model, the outlets of the static end line bank and the arc extinguishing device are integrated at the end part of the first side, the static end line bank only needs to adopt a simple straight plate-shaped structure for line outgoing, and compared with the scheme that the static end line bank is bent from the back part of the bottom plate for line outgoing in the prior art, the length and the copper material consumption of the static end line bank can be reduced, and the production cost is reduced. And loop resistance and temperature rise are reduced. Meanwhile, the space at the back of the bottom plate can be provided with a hanging structure, such as a hanging hole, a hook and the like, so that the switching device can be hung conveniently.

The invention relates to a compressor which comprises a crankshaft, a rotor and an oil-gas separation piece. The rotor is connected to the crankshaft and comprises a fluid through hole. The oil-gas separation part comprises an oil-gas separation part, a first oil collecting part and a first valve, the oil-gas separation part comprises a fluid inlet, a first cavity, a first flow channel, a second flow channel, a second cavity, a fluid outlet, a first oil catching structure and a second oil catching structure, and the first cavity comprises a first sub-cavity and a second sub-cavity which are communicated through the first flow channel; the fluid inlet is communicated with the first sub-cavity, the second runner is communicated with the second sub-cavity and the second cavity, the fluid outlet is communicated with the second cavity, the first runner is arranged away from the crankshaft in the radial direction of the rotor, and the second runner is arranged close to the crankshaft; the first oil catching structure is arranged in the second sub-cavity, the second oil catching structure is arranged in the second cavity, a first oil collecting part is arranged on the bottom wall of the oil-gas separation part, the first valve is connected to the bottom wall of the oil-gas separation part, and the first valve controls the first oil collecting part to be opened or closed.

The present invention provides an air-spinning high-speed motor, comprising a rotating shaft and a stator, wherein a spinning cup is fixed at one end of the rotating shaft, and a thrust member for axially positioning the rotating shaft is provided at the other end; a radial magnetic suspension bearing and a hybrid magnetic suspension bearing composed of the radial magnetic suspension bearing and the axial magnetic suspension bearing are provided on the outer side of the rotating shaft; the radial magnetic suspension bearing and the hybrid magnetic suspension bearing support the rotating shaft between the electromagnets without contact. The present invention utilizes an active magnetic suspension bearing to support the air-spinning rotor without contact, so that the rotor can rotate at high speed, thereby effectively improving the quality of the spun yarn.

The invention relates to the technical field of permanent magnet vernier motors, in particular to a shaft-diameter combined rotor high-power-factor permanent magnet vernier motor which comprises an axial stator, a shaft-diameter combined rotor and a radial outer rotor, the axial stator and the shaft-diameter combined rotor are coaxially arranged, and the radial outer rotor and the shaft-diameter combined rotor are concentrically arranged. And the radial outer rotor is positioned on the outer side of the shaft-diameter combined rotor. The axial stator comprises an armature iron core, a permanent magnet A and a stator winding, the armature iron core comprises an armature yoke and a plurality of armature teeth arranged on the armature yoke in a protruding mode, and the armature teeth are evenly arranged on the armature yoke along the circumference. The axial and radial combined rotor structure is adopted, so that the axial magnetic field is connected with the radial magnetic field, the armature winding is arranged on the axial disc type stator yoke, and the problem of difficult heat dissipation of the winding is solved; the stator magnetic field is modulated by using the magnetic conductance change caused by the salient poles of the rotor, so that low-speed and large-torque output of the motor can be realized, and the power factor of the permanent magnet vernier motor can be improved.

The utility model provides a stator structure and a motor. The stator structure comprises a stator core and a stator winding, wherein the stator core is formed by stacking a plurality of stator punching sheets; the stator winding consists of a main phase winding and an auxiliary phase winding; the stator punching sheet comprises a stator yoke part which is a first circular ring; the plurality of stator tooth parts are connected with the inner wall surface of the first circular ring and are sequentially arranged at intervals around the center of the first circular ring; the stator comprises a plurality of groups of first stator tooth parts and a plurality of groups of second stator tooth parts, and the plurality of groups of second stator tooth parts are arranged in a plurality of first intervals formed by the plurality of groups of first stator tooth parts in a one-to-one correspondence manner; one of the main phase winding and the auxiliary phase winding is wound on each first stator tooth part, the other one of the main phase winding and the auxiliary phase winding is wound on each second stator tooth part, the winding directions of the phase windings on each first stator tooth part are the same, and the winding directions of the phase windings on each second stator tooth part are the same; the problems that in the prior art, a single-phase induction motor is large in vibration noise and poor in starting capacity due to the fact that a concentrated winding is adopted in a stator are solved.

The invention relates to the field of motor design, and discloses a high-power-density lightweight permanent magnet starter which comprises a stator assembly, a rotor assembly and a driving end cover. The motor is characterized in that the stator assembly comprises a motor shell, four permanent magnet poles and four positioning clamps, the four permanent magnet poles are distributed on the inner surface of the motor shell in a surrounding manner, the four positioning clamps are used for fixing the magnetic poles, and the permanent magnet poles are two groups of N-pole and S-pole magnetic poles which are symmetrically distributed; the rotor assembly comprises a rotating shaft, a rotor iron core which is arranged on the rotating shaft in a penetrating manner and is formed by stacking and stamping silicon steel sheets, and a rotor winding which is arranged on the rotor iron core in a penetrating manner; one end of the rotor winding is fixed as a commutator for changing the current direction; a glass fiber sleeve for insulation is fixedly arranged on the outer side of the rotor winding coil; bearings are arranged at two ends of the rotating shaft; the driving end cover is fixedly arranged on the driving side of the permanent magnet starter and connected with the motor shell through bolts.

The present application relates to the technical field of motor anti-shake, and particularly relates to a vehicle motor anti-shake control method and system, a vehicle and electronic equipment, comprising: acquiring motor speed and demand torque in real time, and calculating time sequence indexes and frequency domain indexes of the motor speed; combining the collected motor speed, demand torque, time sequence indexes and frequency domain indexes into a state vector; inputting the state vector into a pre-trained neural network model, and outputting a compensation torque; superimposing the compensation torque and the demand torque to generate a total torque and transmit the total torque to a motor controller to perform torque control; wherein the training process of the neural network model comprises building an offline simulation environment, offline training a reinforcement learning model and online fine-tuning the model. The present application can realize motor anti-shake function, reduce calibration difficulty and cost, reduce loss, can be online fine-tuned and adapted to a real vehicle, and ensure control effect.

The invention provides a rotor assembly of a self-starting permanent magnet auxiliary synchronous reluctance motor and a motor, the rotor assembly comprises a rotor iron core and permanent magnets, the rotor iron core comprises an outer layer filling groove, an inner layer filling groove, permanent magnet grooves, a shaft hole and a rotor excircle, the shaft hole is located at the central axis position of the rotor iron core, and the permanent magnet grooves are located in the outer layer filling groove. The permanent magnet grooves are located in the periphery of the shaft hole so that the permanent magnets can be arranged in the permanent magnet grooves, the inner-layer filling grooves are located between the permanent magnet grooves and the outer circle of the rotor, and the outer-layer filling grooves are located between the inner-layer filling grooves and the outer circle of the rotor. The permanent magnet grooves, the inner-layer filling grooves and the outer-layer filling grooves form a magnetic barrier layer in the radial direction of the rotor, and the inner-layer filling grooves and the outer-layer filling grooves are filled with conductive conductors. According to the self-starting permanent magnet auxiliary synchronous reluctance motor, the problem of low starting torque of the self-starting permanent magnet auxiliary synchronous reluctance motor in the prior art can be solved.

The invention relates to the technical field of motors, and discloses a Halbach array hybrid permanent magnet stator double-zone motor, comprising an inner zone stator, an intermediate rotor and an outer zone stator arranged concentrically. The inner zone stator comprises an inner zone stator core, a NdFeB+AlNiCo hybrid permanent magnet and a pulse magnetization winding wound on the AlNiCo permanent magnet, and the NdFeB and AlNiCo permanent magnets are alternately placed on the outer side of the inner zone stator core along the circumference in a Halbach array. The cylindrical intermediate rotor is alternately placed along the circumference by magnetic conductive blocks and insulating blocks; the outer zone stator comprises an outer zone stator core and an armature winding arranged on the outer zone stator core; the outer zone stator core comprises an outer zone stator yoke and outer zone stator teeth protruding from the inner side of the outer zone stator yoke and uniformly distributed along the circumference, and each outer zone stator tooth is wound with a concentrated armature coil. Compared with the prior art, the present invention can realize low-speed high torque, high-speed wide speed regulation and high efficiency performance of the motor on the basis of realizing magnetization and weak magnetic field regulation of the stator partition motor, and is suitable for the field of electric vehicles.

The invention discloses a motor stator with hollow wave windings, which is characterized in that the hollow wave windings are sequentially embedded into a stator core according to a sequence, one end of each hollow wave winding is connected with a phase line conducting ring, and the other end of each hollow wave winding is connected with a neutral point conducting ring; the phase line conducting ring and the neutral point conducting ring are respectively provided with the winding end portion fixing boss and the phase line leading-out terminal. The winding end portion fixing boss is provided with a threaded hole used for being externally connected with a cooling system. Cooling liquid flows into the hollow wave winding from the winding end portion fixing boss on the phase line conducting ring and flows out from the winding end portion fixing boss on the neutral point conducting ring. According to the invention, the nonuniformity of the internal current of the winding conductor caused by the skin effect is reduced, and the alternating current loss is effectively inhibited; and meanwhile, the cooling liquid passes through the interior of the motor winding, so that the winding temperature is effectively reduced, and the motor efficiency is improved.

The utility model discloses a contact part and a relay. Wherein the contact part comprises a mounting seat and at least one switch, and the switch comprises a static contact piece and a movable contact piece; the mounting seat is fixed relative to each static contact piece and comprises a seat body and at least one connecting piece which are fixedly connected with each other; the static contact piece and the movable contact piece are contact pieces, and at least one contact piece is a first contact piece fixedly connected to the base body through a connecting piece. Furthermore, the seat body and the connecting piece are integrally formed through insert injection molding. The relay adopts the contact part. By adopting the above technical scheme, compared with the prior art, the connection strength of the contact element can be ensured more easily.

The utility model relates to the technical field of dipolar alternating-current synchronous generators, in particular to a rotor punching sheet, a stator punching sheet and a generator. On one hand, the rotor punching sheet provided by the utility model comprises a punching sheet body I, two winding grooves are symmetrically arranged on the punching sheet body I, the openings of the winding grooves face outwards, and a partition is arranged at the central axis of each winding groove; the partition divides the winding groove into two cavities which are symmetrical left and right, and the central axis of the partition coincides with the central axis of the winding groove and is perpendicular to the symmetry axis between the two winding grooves. The partition is provided with a ventilation groove with an outward opening, the groove bottom of the ventilation groove is in a circular arc shape, and the opening is in a horn shape expanding outwards. The distance between the two winding grooves ranges from 60 mm to 66 mm. Secondly, the utility model provides a stator punching sheet. In addition, the utility model also provides a generator. The overall performance of the generator is further improved.

This utility model relates to the field of synchronous variable frequency motor technology, and provides a permanent magnet synchronous variable frequency motor for tractors, including a stator and a rotor. The rotor adopts a hollow permanent magnet structure, with multiple permanent magnets evenly embedded in the rotor core along the circumferential direction. Multiple weight-reduction slots are provided on the outer side of the rotor core. Weight-reduction holes are provided on the rotor laminations, and the motor's drive shaft has no shaft-mounted fan structure. Compared with asynchronous motors, the permanent magnet motor provided by this utility model has a smaller volume for the same power, and the weight reduction measures make the permanent magnet synchronous motor for tractors lighter and more compact. Because the rotor of the permanent magnet motor uses permanent magnets, the overall current of the motor is reduced, and the heat generated by the motor is also reduced. Furthermore, removing the fan connected to the drive shaft further reduces the motor's weight. The use of a permanent magnet motor for tractors reduces copper losses and improves overall operating efficiency.

The invention discloses an automobile power supply management device and an application method thereof, and belongs to the field of automobile power supplies, the device comprises a power supply management circuit, the power supply management circuit comprises a voltage input module, a current sampling module, an anti-reverse connection module, a voltage stabilization module, a control module, a temperature sampling module, an indicating lamp module and a voltage output module, the voltage input module is connected to the voltage output module through the current sampling module and the reverse connection prevention module in sequence; the voltage stabilizing module is connected with the voltage output module; the control module is connected with the voltage input module, the current sampling module, the voltage stabilization module, the temperature sampling module and the indicating lamp module. The control module further comprises a communication interface. According to the invention, the functions of voltage conversion, short-circuit protection, redundant use and multi-stage parallel enhanced output of the power supply are realized.

The application discloses a standard phase belt integer slot short-pitch lap winding symmetrical 4-branch connection method, which comprises the following steps: 1) dividing positive and negative phase belts, and dividing p-pole pairs into j normal pole pairs and k special pole pairs; 2) connecting coils under the j normal pole pairs according to normal winding pitch y1; 3) performing phase-to-phase exchange on lower-layer coil edges under the k special pole pairs; and 4) recombining the upper and lower-layer coil edges under the k special pole pairs and constructing winding branches. The winding formed by the method of phase-to-phase exchange of the lower-layer coil edges can weaken high-order harmonics, the branches of each phase are completely symmetrical in electric potential and magnetic potential, and there is no circulating current between the parallel branches; the three-phase branches are also completely symmetrical; the connection problem of the short-pitch lap winding symmetrical 4-branch is solved, the advantages of the lap winding are still embodied, the copper consumption of the motor winding is significantly reduced, and the theoretical limitation that the short-pitch symmetrical 4-branch winding cannot be connected under the odd number of pole pairs is broken through.

The utility model discloses a stator assembly, a motor, a power assembly and a vehicle. The stator assembly comprises a stator core and a stator winding. The stator winding comprises a three-phase winding wound on M stator slots of the stator core, each phase winding comprises at least one branch, the insertion parts of a plurality of flat wire hairpins of the plurality of branches of the multi-phase winding are respectively positioned in N slot layers of the stator slots, at least two insertion parts in two adjacent stator slots belong to different phase windings, and the insertion parts of the plurality of flat wire hairpins of the plurality of branches of the multi-phase winding are respectively positioned in N slot layers of the stator slots. Each stator slot includes a first hairpin, at least one second hairpin, and a third hairpin. A part of spans of the first hairpins are y, a part of spans of the first hairpins are y-1, the spans of the second hairpins are y-1, and the spans of the third hairpins are y + 1. Therefore, fifth and seventh harmonics in the magnetic field can be effectively eliminated, and 24-order torque pulsation of the motor can be well suppressed. And the height between the two axial ends of the stator assembly is reduced, the copper consumption is reduced, the cost is reduced, the resistance is reduced, the copper consumption is reduced, and the efficiency is improved.

The present invention belongs to the technical field of low-voltage electrical appliances, and specifically relates to a circuit breaker, comprising an insulating housing (100) and an operating mechanism (200) arranged in the insulating housing (100), a contact system (300), an arc extinguishing system (400), an overcurrent protection system (500), an outlet terminal (600) and an inlet terminal (700), characterized in that an arc channel (800) is arranged at the bottom of the insulating housing (100). The arc extinguishing chamber of the present invention is arranged below, and the arc is ejected from the arc channel at the bottom, eliminating the setting of the arc ejection port at the inlet terminal, and the safety distance can be reduced to zero, which can reduce the space of the switch cabinet, and at the same time shorten the length of the connecting plate and busbar connected to the circuit breaker, thereby reducing the copper consumption of the switch cabinet and reducing the cost.

The utility model belongs to motor technical field discloses a kind of stator assembly and motor with even layer of whole pitch winding. Including stator core and stator winding;The stator winding includes several stacked coils;Several stator slots are set along the circumferential direction of the stator core;N layers of conductors are provided in each stator slot;The first layer to the layer in any stator slot is occupied by the stacked side of each stacked coil, and the other stacked side occupies the Nth layer to the Nth layer in another stator slot spaced apart from the any stator slot by one stator slot;Wherein, N is even, Z is the total number of stator slots, and P is the number of poles;The end portions of the two stacked coils arranged adjacently located in the same layer are welded and fixed.The utility model has the technical advantages of simple welding, low copper consumption and no interphase circulating current.

The invention discloses a stator structure based on a disk-type permanent magnet motor winding, comprising: a PCB board with at least 6 layers or 6N layers, and a Hall sensor; each layer of the PCB board is provided with: multiple groups of outer ends, a winding setting part, and multiple groups of inner ends; each layer of the PCB board is provided with at least three-phase windings, and each phase of the winding is respectively provided with two wiring terminals; the wiring terminals are provided on the outer ends; each phase winding coil is printed and arranged from the corresponding outer end; the winding coil is uniformly printed on the winding setting part along the circumference, and the length of the winding coil is printed in parallel along the radial direction, and is arranged in parallel without overlapping; the winding coils of the same phase arranged on each layer of the PCB board are connected through the outer ends and the inner ends; the Hall sensor is arranged on the outer ends at an angle; and the layers in the PCB board are connected through vias.