45results about How to "Realize energy transfer" patented technology

The invention discloses a five-phase fault-tolerant permanent magnet planetary gear motor for a hybrid electric vehicle and an operation method of the five-phase fault-tolerant permanent magnet planetary gear motor. A permanent magnet gear ring and a permanent magnet sun gear which are coaxial are nested in a stator sequentially, a plurality of pairs of permanent magnets are adhered to both the inner surface and the outer surface of the permanent magnet gear ring, four consistent permanent magnet planetary gears evenly distributed on the periphery are arranged between the inner surface of the permanent magnet gear ring and the outer surface of the permanent magnet sun gear, the permanent magnets are closely adhered to the outer surface of each permanent magnet planetary gear, and the permanent magnet planetary gears are connected with a planet carrier; the permanent magnets closely arrayed are adhered on the outer surface of the permanent magnet sun gear; all the permanent magnets are magnetized along circles in which the permanent magnets are located radially, and each adjacent two permanent magnets are arrayed according to a polarity order of N, S, N and S; and a high-power-density multiple-phase fault-tolerant permanent magnet brushless motor is integrated with the high-torque-density permanent magnet planetary gears, and accordingly space utilization rate, transmission efficiency and torque density are high.

The invention discloses a three-phase electric and electronic transformer based on a multi-level multi-module cascade structure. The three-phase electric and electronic transformer has three levels, i.e. an input level, an isolation level and an output level. An output end of an input-level power converter is connected with an input end of a high-frequency DC/AC (direct current/alternating current) link power converter; an output end of the high-frequency DC/AC link power converter is connected with the primary side of a high-frequency transformer; the secondary side of the high-frequency transformer is connected with the input end of the high-frequency DC/AC link power converter; the output end of the high-frequency DC/AC link power converter is connected with an input end of an output-level power converter; an output end of the output-level power converter is connected with an input end of an LC wave filter; and the LC wave filter is connected with a three-phase power supply network. Basic functions, such as transformation, isolation and energy transfer of the traditional electric transformer can be realized, and for the input voltage with different levels, corresponding voltage can be born only by calculating the corresponding number of input-level serial modules and serial connection according to corresponding module number.

The invention discloses a coupling structure of a dual-mode medium resonator and a metal resonator. The coupling structure comprises a metal cavity, a metal wall dividing the metal cavity into a dual-mode medium resonant cavity and a metal resonant cavity, a dual-mode medium resonant rod and a metal resonant rod. The metal wall is provided with a through hole. The through hole is internally provided with a metal coupling wire sleeved by a supporting body. One end of the metal coupling wire in the metal resonant cavity is fixedly connected with a coupling disk, and one end in the dual-mode medium resonant cavity is connected with the middle part of a metal coupling rod fixed on the bottom part of the dual-mode medium resonant cavity. A coupling tuning screw is fixed on a covering plate right above the metal coupling rod. The coupling structure is simple in machining technology, low in cost, convenient for mass production and convenient to assemble and debug.

The invention discloses a three-phase power electronic transformer capable of balancing asymmetric load. The transformer is divided into an input level, an isolation level and an output level, output ends of input-level power converters are connected with input ends of high-frequency DC (direct current)/AC (alternating current) link power converters, output ends of the high-frequency DC/AC link power converters are connected with primary sides of high-frequency transformers, secondary sides of the high-frequency transformers are connected with the input ends of the high-frequency DC/AC link power converters, the output ends of the high-frequency DC/AC link power converters are connected with input ends of output-level power converters, and output ends of the output-level power converters are connected with input ends of LC filters which are connected with a three-phase power supply network. The three-phase power electronic transformer capable of balancing asymmetric load can realize basic functions of transformation, isolation, energy transfer and the like of conventional power transformers, and as for input voltages of different levels, the serial module number of corresponding input levels only needs to be calculated, and corresponding voltage can be borne by serial connection according to corresponding module number.

The invention discloses a metal liquid droplet atomization protecting gas hood. The metal liquid droplet atomization protecting gas hood comprises an upper cavity cover, a lower cavity cover, a flow guide pipe and a high-pressure gas channel, wherein the flow guide pipe penetrates through the upper cavity cover and the lower cavity cover, the upper cavity cover and the lower cavity cover are matched to form a high-pressure atomization circumferential seam and a high-pressure chamber, and the high-pressure gas channel is communicated with the high-pressure chamber. The metal liquid droplet atomization protecting gas hood solves the technical problem of blockage of the flow guide pipe due to molten metal coagulation.

The invention belongs to the technical field of fluorescent powder preparation achieved through a wet chemistry method, and particularly relates to a preparation method of titanate fluorescent powder for an LED. The titanate fluorescent powder is prepared by adopting a sol-gel method and can be obtained in later low temperature calcination. Compared with a traditional high temperature solid state method, the sol-gel method has the advantages that the needed later calcination temperature is low, the requirement on equipment is low, energy consumption is little, and the method is suitable for industrialized production; RE<3+> in the fluorescent powder obtained through the sol-gel method is uniformly dispersed and can easily enter M(x)Sr(1-x)TiO3 to achieve energy transmission, and the obtained fluorescent powder is excellent in luminescence property. The fluorescent powder obtained through the sol-gel method is uniform in particle size distribution and is uniformly mixed with sealing glue. The obtained titanate fluorescent powder are uniform in particle size distribution and good in color rendering property, can be widely applied to the fields of illumination, backlight and the like and has the great market prospect and economic value.

The invention relate to a management method and system for regenerative braking energy during differential steering of a front wheel hub of an electric vehicle. The management method comprises the following steps that a throttle signal, a steering wheel signal, the left front wheel speed and the right front wheel speed of the electric vehicle are collected; the target vehicle speed and target turning radius of the electric vehicle are calculated according to the throttle signal and the steering wheel signal; according to the target vehicle speed and the target turning radius, a steering modelof the electric vehicle is combined at the same time to calculate the left front wheel target wheel speed and the right front wheel target wheel speed; and according to the left front wheel speed, theright front wheel speed, the left front wheel target wheel speed and the right front wheel target wheel speed, the operation state of the left front wheel and the right front wheel of the electric vehicle is judged, and thus the compensation power or storage power of an electric vehicle power battery is calculated. The management method has the beneficial effects that the operation state of the front wheel hub of the electric vehicle is effectively judged, thus whether a regenerative braking system is added or not is decided, effective utilization and recovery of the feedback braking energy are achieved, the energy utilization rate is increased, and energy saving and environmental protection are achieved.

The invention belongs to the technical field of preparing fluorescent powder through wet chemical methods, and particularly relates to a preparation method of silicate fluorescent powder for LEDs. Comparing silicate fluorescent powder obtained by adopting a solvothermal method with conventional high-temperature solid-phase methods, later-period calcining temperature needed in the solvothermal method is low, process is simple, energy consumption is low, and the preparation method is suitable for industrial production. Compared with the conventional solid-phase methods, RE3+ in the fluorescent powder obtained by the solvothermal method is dispersed uniformly and is prone to entering MAlSiO4 to realize energy transfer, and color developing performance of the obtained fluorescent powder is excellent; particle size of the obtained fluorescent powder is uniform in distribution, and uniform mixing of the fluorescent powder with glue in later-period application is facilitated; the fluorescent powder can be widely applied in the fields of lighting and backlight and has great market prospect and economic value.

The invention belongs to the technical field of fluorescent powder preparation achieved through a wet chemical method and particularly relates to a preparation method of MxSr(1-x)TiO3:Eu3+ high-purity red fluorescent powder used for high-color-gamut LEDs. MxSr(1-x)TiO3:Eu3+ (0<x<=0.5) high-purity red fluorescent powder prepared through a sol-gel method and used for LEDs is calcinated at low temperature at the later stage so that the MxSr(1-x)TiO3:Eu3+ high-purity red fluorescent powder can be obtained. Compared with a traditional high-temperature solid-phase method, the later-stage calcination temperature needed by the sol-gel method is low, the requirement for equipment is low, energy consumption is low, and the preparation method is suitable for industrial production. Eu3+ in the obtained fluorescent powder is uniform in dispersion and can easily enter MxSr(1-x)TiO3 to achieve energy transmission; emission peak half-wave width of the obtained red fluorescent powder is small, and the red light color purity is high; particle size distribution is uniform, the red fluorescent powder can be easily mixed with glue in later-stage application of the fluorescent powder, and the MxSr(1-x)TiO3:Eu3+ high-purity red fluorescent powder is suitable for being used for the high-color-gamut white-light LEDs.

The invention discloses an equalization circuit based on a bipolar T-shaped double-resonance switched capacitor converter and a control method. The equalization circuit comprises two series battery packs, a switch network, an equalization bus, the bipolar T-shaped double-resonance switched capacitor converter, a switch driving circuit, a voltage sampling circuit and a controller. Energy balance ofthe battery pack is achieved through the bipolar T-shaped double-resonance switched capacitor converter, the method has the advantages of being high in balance speed and flexible in balance path, andthe available capacity of the battery pack can be effectively improved. Zero-current switching is achieved through resonance of the inductor and the capacitor, switching loss is greatly reduced, theswitching frequency can be improved, and the circuit size is reduced. The equalization circuit control method not only can realize equalization in the series battery packs, but also can realize energytransmission of the battery monomers among different series battery packs, and the equalization path is more flexible.

The invention belongs to the technical field of preparing fluorescent powder through the wet chemical method, and particularly relates to a method for preparing MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder for an LED. The MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder (0<x</=0.5) for the LED is prepared through the solvothermal method. The MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder can be obtained through low-temperature forging in the later stage. The MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder obtained through the solvothermal method is uniform in particle size distribution, high in excitation efficiency and good in color zone uniformity, and the fluorescent powder can be matched with blue light excitation to achieve white light emission.

A method for preparing a special-shaped magnetic core by thermoplastic injection molded iron-based composite materials is mainly characterized in that a carbonyl iron powder magnetic core with a complicated structure or a small size is machined by the aid of a fluid forming process, phosphate carbonyl iron powder serves a main material, thermoplastic polystyrene, phenolic resin, organic chemical benzene and industrial absolute alcohol serve as auxiliary materials, uniformly mixed isotropic iron-based composite materials with high magneto-rheological effect are prepared by the aid of melt blending technology and are crushed, iron-based powder is driven to sufficiently fill a mould cavity by flowability of thermoplastic polystyrene polymer materials under the condition of a certain temperature, a certain magnetic field and a certain pressure, and complicated parts can be formed by cooling and demoulding. The prepared miniature or special-shaped magnetic core is high in quality factor and fine in magnetic performance, the problem of difficulty in forming is solved, and the magnetic core with a miniature structure can be formed.

The invention discloses a water purifying and drinking water machine and a machine body unit and a boiling container thereof. The water purifying and drinking water machine comprises the machine body unit, a connector and the boiling container, and the machine body unit is connected with the boiling container through the connector. A first carrier chip of the machine body unit is connected with a power panel of the machine body unit and the connector, receives a power signal and a control signal provided by the power panel, generates a first modulation signal according to the power signal and the control signal, and transmits the first modulation signal to the boiling container through the connector. A second carrier chip of the boiling container is connected with the connector, a power switching module of the boiling container and an electronic control module of the boiling container, receives the first modulation signal, acquires the power signal and the control signal according to the first modulation signal, and sends the power signal and the control signal to the power switching module and the electronic control module respectively. The water purifying and drinking water machine simple in structure can have various intelligent control functions favorably.