48results about How to "Guaranteed Power Density" patented technology

The invention discloses a magnetic flux-switching generator, which comprises a stator, a rotor, a magnet exciting coil and an armature coil, wherein the number of the poles of the rotor is equal to the number of the slots of the stator; the two circle edges of the armature coil are positioned in two adjacent slots of two adjacent stator gears; winding coils are connected end to end in series in turn to form single-phase centralized armature windings; and the magnet exciting coil is vertical to the armature coil. In the invention, the single-phase centralized armature windings and a permanent magnet or/and single-phase centralized magnet exciting windings are adopted in the stator part, the rotor has straight or slant slots and the number of the poles of the rotor is equal to that of the slots of the stator; and thus, the generator retains the structural advantages of compactness, simplicity, high robustness and suitability for high-speed rotation of the conventional magnetic flux-switching generator and can be directly used as a single-phase alternating current power supply due to the same phase of the electrodynamic potentials generated by the coils, and the cost of the generator is low.

The invention discloses a single-phase reluctance generator which comprises a stator and a rotor in projecting magnetic pole structures by stacking silicon-steel sheets. Stator magnetic poles are provided with concentrated armature windings which are connected in series or parallel into a group according to the N polarity and the S polarity of the armature windings; rotary magnetic poles arranged on the rotor has the same number as the magnetic pole number of the stator and comprise winding excitation magnetic poles or permanent-magnet magnetic poles and permanent-magnet excitation mixed magnetic poles; magnetic pole windings adjacent to the rotor are connected in series or parallel to form a plurality of N groups and S groups; and the stator poles and the rotor poles consist of 2-stage poles, 4-stage poles, or even n-stage poles, namely even poles or pair poles, respectively comprise different stage poles and have the same total pair poles. The invention adopts a stator isopolar technology so that the rotor can adopt different modes, such as the excitation magnetic poles, the permanent-magnet magnetic poles and the mixed magnetic poles of the permanent-magnet magnetic poles and the electric excitation magnetic poles, and the stator windings can be simultaneously utilized; the dynamic combination of the windings connected in series or parallel facilitates the adjustment of an output voltage, improves the utilization rate of the windings, enhances the power density of the generator and improves the performance and the efficiency of the generator.

The invention relates to a double-equal pole double-section stator/rotor reluctance generator, comprising two sections of stators and rotors of a salient pole structure or a non-salient-pole structure formed by laminating silicon-steel plates. A stator salient pole is provided with armature concentrated windings or layer windings; the windings are connected in series or in parallel according to the N-N polarity of the armature windings to form a phase, and the windings are connected in series or in parallel according to the S-S polarity of the armature windings to form the other phase; the rotors are equipped with rotating magnetic poles with the same pole number with the stators, and the adjacent pole windings of the rotors are connected in series or in parallel to form a plurality of N and S groups; the rotors can adopt excitation magnetic poles and permanent magnetic poles in different forms and permanent magnetic and electro-magnetic mixed poles, and a rotor excitation device is arranged on a motor shaft; each rotor can be divided into an inner rotor and an outer rotor; and the armature windings can be arranged on the stators or the rotors. In the invention, by adopting an equal-pole-number stator/rotor technology and series/parallel connection dynamic combination of the windings, output voltage can be regulated conveniently, the utilization ratio of the windings is improved, and power density and efficiency of the generator are enhanced.

The invention discloses a serial-parallel hybrid power transmission device for a passenger car, wherein only one clutch is disposed; an in-parallel working condition is achieved; acceleration of a power generator is carried out by a planet row; speed reduction and torque increase of an electric motor is achieved by a fixed-shaft gear; and the structure and technologies are simple, so the cost can be controlled easily. The hybrid power transmission device comprises an input shaft, a damper, the clutch, the acceleration planet row, a differential mechanism, the electric motor, the power generator and a fixed-shaft gear transmission mechanism. Start, low-speed and middle-speed working conditions are driven by pure electric driving or serial-parallel hybrid power driving; the car is driven separately by the electric motor; and the power of electric motor can come from a battery pack or the power generator. Under the working condition of serial-parallel power, an engine drives the power generator to generate power by the acceleration planet row. At this moment, the power generator can work in an economic oil consumption interval, and surplus electric energy can be stored in the battery pack. Under the direct drive working condition of engine, the clutch is connected and power of the engine directly drives car travelling, so that an energy transformation course can be reduced, and transmission efficiency can be increased.

The invention relates to the technical field of lithium ion batteries, in particular to an electrode and a preparation method thereof. The electrode comprises a current collector, a plurality of through hole layers and a plurality of active layers, the through hole layers and the active layers are arranged on the current collector, and the through hole layers are arranged between the current collector and the active layers or between any adjacent active layers. The electrode is composed of a plurality of active layers and through hole layers, each through hole layer is composed of a net structure of a high polymer, the high polymer is dissolved in electrolyte when the electrode is used, namely a pore structure with controllable pore size and distribution is formed, so that each active layer can be in contact with more electrolyte, and the problems that electrolyte infiltration of a thick electrode is difficult and ion transmission is slow are solved. Besides, the morphology of the through hole layer is controllable, compared with a traditional porous electrode, the tortuosity of pores is lower, ion conduction is faster, the ion conductivity of the pole piece is improved, and then the energy, the power density and the rate capability of a battery cell are guaranteed.

The embodiment of the invention provides a three-lug laminated composite battery, and the battery comprises a positive plate, a negative plate, a diaphragm and electrolyte, wherein the positive and the negative plates are alternately stacked, and the adjacent positive and negative plates are separated by the diaphragm; the positive plates comprise a first positive plate and a second positive plate; the first positive plate comprises a first positive current collector and supercapacitor positive electrode materials arranged on the surfaces of the two sides of the first positive current collector; the second positive plate comprises a second positive current collector and lithium ion battery positive electrode materials arranged on two surfaces of the second positive current collector; the first positive plate is connected with a first positive lug , the second positive plate is connected with a second positive lug, the first positive lug and the second positive lug are mutually independent, and the negative plate is connected with the negative lug. The composite battery has the advantages of a lithium ion battery and a super capacitor, and can avoid a self-discharge effect.

The invention provides a resonant converter and a current processing method. The resonant converter comprises more than two resonant units, wherein each resonant unit comprises a bridge-type inversioncircuit, a resonant circuit, a transformer, a rectification circuit and a filtering circuit, an input end of the bridge-type inversion circuit is connected with an input end of a DC voltage, an output end of the bridge-type inversion circuit is connected with an input end of the resonant circuit, an output end of the resonant circuit is connected with a first end of a primary side of the transformer, a first output end of a secondary side of the transformer is connected with an input end of the rectification circuit, an output end of the rectification circuit is connected with the filtering circuit, second input ends of primary sides of the transformers of more than two resonant units are connected in a triangular or star mode, and a connection point of the primary sides of the transformers of more than two resonant units is in a suspension state.

The invention discloses an ultrasonic oil-water separation device, which comprises a water storage tank. The device is characterized in that a plurality of ultrasonic transmitting vibrating plates are arranged in the water storage tank. The device has the advantages that ultrasonic acts on oil-containing wastewater, so that the oil-water separation effect is good, the recovery rate of oil is high, the consumption of energy required when the device works is low, economic benefits are ensured, and energy conservation and emission reduction are realized at the same time.

The invention discloses a method and a system for optimizing a server power supply. The method comprises the following steps: acquiring LLC-level output current; according to the output current, utilizing a formula VinRef = K * Iout + 380 to calculate the to-be-output voltage of the PFC level; and updating the current output voltage of the PFC stage according to the to-be-output voltage. The system comprises an output current acquisition module, a to-be-output voltage calculation module and an updating module. Through the application, the efficiency of the LLC loop can be effectively improved,and the overall efficiency of the server power supply can be greatly improved under the condition of ensuring that the holdump time is improved.

The present invention discloses a bearingless induction motor with a square stator. The section of the outer wall of a square stator is square, 24 stator slots are uniformly arranged on the square stator along a peripheral direction, the 24 stator slots are formed by 8 same big slots, 8 same middle slots and 8 same small slots; each two of the big slots, the middle slots and the small slots forms one group to be symmetrically arranged relative to the diagonal line of the square, the big slots are closest to the position of the diagonal line, the middle slots are located at the middle position, and the small slots are farthest away from the diagonal line; and each small slot is internally provided with a small slot torque winding, the inner layer of each middle slot is internally provided with a middle slot torque winding, and the outer layer of each middle slot is internally provided with a middle slot suspension winding, the inner layer of each big slot is internally provided with a big slot torque winding, and the outer layer of each big slot is internally provided with a big slot suspension winding. The bearingless induction motor with a square stator fully utilizes square silicon steel raw materials to further reduce the size of the bearingless motor so as to further improve the critical speed of rotation and ensure the normal output of the torque and the power density of the bearingless induction motor.

The invention discloses a power module structure integrated with a current sensor.The structure comprises a radiator, a plastic shell, a copper-clad ceramic substrate, a wafer, a cover plate and an alternating current busbar, the copper-clad ceramic substrate is arranged on the surface of the radiator, the wafer is arranged on the copper-clad ceramic substrate to form a control circuit, and the plastic shell is arranged on the radiator and wraps the copper-clad ceramic substrate. The alternating-current busbar is connected with the copper-clad ceramic substrate and extends out of the plastic shell; the cover plate is arranged on the top surface of the plastic shell; the structure further comprises a current sensing chip, a current sensing plate and a metal shielding cover. The current sensing chip is welded on the current sensing plate, and the current sensing plate is arranged on the plastic shell and directly faces the alternating current busbar extending out of the plastic shell; the metal shielding cover wraps the alternating current busbar and the current sensing plate, and the current sensing chip detects a current signal of the alternating current busbar. According to the structure, the integration level of the power module and the current sensor is improved, acquired current signals are prevented from being interfered or other signals are prevented from being interfered, the current sampling precision and the sampling reliability are improved, the power density of the power module is ensured, and the cost is reduced.

The invention discloses a micro wave colorimetric pool, which comprises a pool body, a microwave radiator and a temperature sensor, wherein the pool body is a light-transmission hollow container; a threaded opening, a top cover and a sealed pad are arranged at the upper side; the microwave radiator comprises a fine rod body and a radiation head; the temperature sensor comprises an optical fiber connecting body and a temperature sensing probe. The micro wave colorimetric pool is characterized in that the fine rod body and the optical fiber connecting body are fixed in the sealed pad of the poolbody ; the radiation head and the temperature sensing probe extend to the upper part of the colorimetric pool body; the radiation head has a forwards extending microwave heat field region. In the useprocess, the microwave colorimetric pool is arranged on a colorimetric base of an externally mounted optical fiber spectrum system; a spectrum emitting probe and a receiving probe directly face the micro wave heat field region in the pool body. A microwave reactor and the colorimetric pool are integrated; the device and the operation process are simplified; the sample treatment speed is obviouslyaccelerated; the temperature control is precise; the spectrum measurement in the microwave field can be realized.

The present invention relates to a printed circuit board. The printed circuit board comprises a PCB, a power electronic component installed at one surface of the PCB and capable of heating at work, a metal cooling fin strip is arranged at the other surface of the PCB, the PCB is provided with the insertion hole of the metal cooling fin strip, and the metal cooling fin strip is bended and then passes through the PCB through the insertion hole to be stretched into the heating area of the heating power electronic component. The heat emitted by the power electronic component can be directly conducted on the metal cooling fin strip at the other surface of the PCB through the metal cooling fin strip to perform heat radiation on the metal cooling fin strip with no need for a structure of laying one layer of insulation heat conduction materials and copper coating on an aluminum plate for heat radiation so as to solve the technical problems that the current printed circuit board is complex in technology, the product disability rate is high and the maintenance is not convenient.

The invention discloses a buck-boost Cuk double-resonance switched capacitor converter, and the converter is improved on the basis of a conventional reverse voltage mode SCC, two small inductors are introduced to form a double-resonance loop, soft switching is achieved, switching loss of the converter is reduced, and reliability of the converter is improved; meanwhile, the excellent voltage gain adjustment performance of the converter is realized by adjusting the resonance charging and discharging time. Compared with other RSCC topologies, the RSCC topology has the advantages that the complexity of a circuit structure is not increased, and a high-performance and low-cost solution is provided for an application occasion needing high power density and an ultra-wide voltage gain adjustment range.