52results about How to "Meet high power demands" patented technology

A pure electric bus drive control method comprises the following steps that after a vehicle controller passes self inspection, a working pattern of the a vehicle is judged to be one of a safety starting pattern, an economic pattern and a power pattern according to the opening degree of an accelerator pedal, the change rate of the opening degree of the accelerator pedal and the SOC state of a battery and by combining a minimum working time limiting module; if the working pattern of the vehicle is recognized as the safety starting pattern, expected motor torque under the safety starting pattern is calculated; if the working pattern of the vehicle is recognized as the economic pattern, the expected motor torque under the economic pattern is calculated; otherwise the expected motor torque under the power pattern is calculated; finally, the expected motor torque is restrained and limited through energy limiting strategies, final target torque instructions are output to a drive motor if the vehicle has no serious faults at the moment, the vehicle is switched to high pressure if a fault level is high, and otherwise the final demand torque of the drive motor is output as zero.

The invention provides a drive system for a hybrid car, comprising a motor and an electric motor providing power for a gearing; a generator for receiving the power of the motor to generate electricity; and an electric power between the generator and the electric motor; the system also comprises a double clutch which is connected between the motor and the generator as well as the gearing and is used for transmitting the driving force of the motor selectively to the generator or the gearing. When a vehicle runs at a low speed, the double clutch is controlled to transmit the driving force of the motor to the generator to generate electricity; the electric motor receives the electric energy and outputs mechanical energy to the gearing to drive the vehicle, thus realizing a series type drive of the hybrid car. When the vehicle runs at a high speed, the double clutch is controlled to transmit the driving force of the motor directly to the geraing to drive the vehicle.

The invention provides an internal-combustion high-speed motor train unit which comprises a power towing carriage, a motor train unit carriage for carrying passengers as well as a trailer carriage connected with the motor train unit carriage for carrying passengers, wherein the power towing carriage comprises a power towing device and is used for towing the motor train unit carriage and the trailer carriage to run; the motor train unit carriage is connected with the power towing carriage, comprises an electric actuator, and is used for towing the trailer carriage to run through the electric actuator under the towing of the power towing carriage; and the trailer carriage is connected with the motor train unit carriage and runs under the towing of the power towing device and the electric actuator. According to the internal-combustion high-speed motor train unit provided by the invention, by adopting a form of separately arranging the power towing device and the electric actuator, the requirement for large power of the high-speed motor train unit is met, and the axle load is simultaneously reduced so as to enable the internal-combustion high-speed motor train unit to be practical and industrialized possibly, thereby greatly reducing the impact on lines and effectively reducing the construction and maintenance cost of the lines.

A postpose type backup power system comprises a battery backup unit and relates to each function board assembly of data information device; wherein the battery backup unit is directly connected between the input terminal of each function board assembly and the output terminal of fore power transformer of each function board assembly in parallel; when commercial electricity and the fore power transformer of each function board assembly are in normal, and commercial electricity supplies power to each function board assembly of data information device by virtue of the fore power transformer of each function board assembly and battery in the battery backup unit is charged; and when commercial electricity is abnormal or the fore power transformer at the input terminal of each function board assembly of data information device is in fault, the battery backup unit directly supplies power to each function board assembly of data information device without any intermediate conversion link. The backup power system of the invention has the advantages of high conversion efficiency, good reliability, small volume and high power and is beneficial for installation, replacement and maintenance.

The invention provides a battery system and an electric automobile. The battery system comprises battery modules, wherein each of the battery modules comprises a plurality of battery module units; each of the battery module units comprises a plurality of batteries; a first heating pole and a second heating pole connected with the first heating pole are arranged on each of the batteries; each first heating pole is serially connected to a first branch; the second heating pole is serially connected to a second branch; the first branch is connected with a cathode of an external power supply; the second branch is connected with an anode of the external power supply; a temperature sensor is arranged in each of the battery module units and is used for detecting the temperature of the battery; an executing plate is used for collecting a temperature signal acquired by the temperature sensor. According to the battery system provided by the invention, the heating pole arranged on the battery can realize the heating of the battery. Such a heating manner increases the heating efficiency and guarantees the battery to be free from being overheated, and meanwhile, the increasing of the battery temperature can be completed within a short period of time, the battery temperature can reach the temperature for high-power charging and discharging, and the high power requirement of the whole vehicle is met.

The mixed power driven semi-towed truck is developed for eliminating the limitation of great power driver to heavy truck. It consists of towing truck and trailer, the towing truck is provided with driver and vehicular power generator set and the trailer is provided with driving motor connected to the vehicular power generator set. The semi-towed truck is dispersed driven, rather than concentrated driven, and thus has improved driving performance, raised driving efficiency, improved bearing capacity, towing capacity, climbing ability, accelerating performance, etc. The semi-towed truck has operating power determined based on the practical load and thus obvious fuel oil saving effect.

The invention relates to a rechargeable lithium battery electric tool, comprising a clamping head part, a gearbox, a motor, a handle and a battery pack, wherein the battery pack is arranged inside the handle and comprises 4 lithium batteries, a battery shell and a battery base, the four lithium batteries are installed inside the battery shell the bottom of which is provided with the battery base, and the battery base is in inserted connection with the handle; the rechargeable lithium battery electric tool has the advantages that: the structure is simple and novel, the use is convenient; based on the basic design concept that the advantages of compact rechargeable lithium battery electric tools and large-power output rechargeable lithium battery electric tools are combined, the rechargeable lithium battery electric tool of the invention, on one hand, meets the power demand of large power output by adopting a 14.4V(14.4V to 16V) lithium battery system as power base and platform, and on the other hand, shortens own overall volume because the battery pack including the 4 lithium batteries is designed inside the handle. At the same time, the power of the tool is improved while the overall volume is reduced owing to the use of short rare earth motor.

The invention provides a wireless power supply system for power equipment of a high-voltage transmission line, and the system comprises an energy obtaining current transformer CT which is used for obtaining the electric energy from a high-voltage side; a transmitting end electric energy conversion device which is used for converting the obtained electric energy into a single-frequency high-frequency alternating current; an electric energy transmitting coil which is used for receiving the single-frequency high-frequency alternating current, and transmitting the electric energy to an electric energy receiving coil through resonance magnetic coupling; an electric energy receiving coil which is used for transmitting the received alternating current to a receiving end electric energy conversiondevice; the receiving end electric energy conversion device which is used for converting the received AC electric energy into DC electric energy, and outputting the DC electric energy to the power equipment of the high-voltage transmission line. The receiving end electric energy conversion device comprises a rectification module, an energy storage module, an overvoltage protection module, a DC / DCvoltage-stabilizing module and a power management module. The system also comprises an energy storage module which comprises a supercapacitor and a lithium battery. The system employs the supercapacitor, thereby enabling the energy density to be high, and enabling the conversion efficiency to be high. The system can provide reliable power in any environment.

The invention discloses a high-power permanent-magnet direct-drive bogie and a rapid passenger locomotive. The high-power permanent-magnet direct-drive bogie comprises a framework, a wheel set, a drive mechanism, a traction mechanism, a brake mechanism and a suspension mechanism. The framework is provided with a first surface and a second surface which are opposite. The framework comprises a pairof side beams, a plurality of cross beams connected between the pair of side beams and a traction beam. The driving mechanism comprises a motor, a coupler and a hanging device, wherein the motor is installed on the second surface of the framework through the hanging device, and the motor is a high-power permanent-magnet direct-drive motor. The traction mechanism comprises a traction rod, a vehiclebody traction support and a bogie traction support, wherein the vehicle body traction support and the bogie traction support are connected to the two ends of the traction rod respectively. The bogietraction support is connected to the traction beam. The brake mechanism comprises a brake and a brake disc, wherein the brake disc is installed on a wheel, and the brake is connected with the brake disc and the cross beams. The suspension mechanism comprises a primary suspension device and a secondary suspension device, wherein the primary suspension device is arranged between the wheel and a second side face, and the secondary suspension device is arranged on a first side face.

The invention relates to a high-torque continuously variable transmission for transferring high torque. The continuously variable transmission consists of a double-cavity half-toroid continuously variable unit, an ordinary gear train, a double-row differential train and a reversing mechanism which are in traction drive, wherein input power is transmitted in two paths of which one path is transferred to a planet carrier of the double-row differential train through a main shaft, and the other path is transferred to a fifth gear of the double-row differential train through the double-cavity half-toroid continuously variable unit and the ordinary gear train; the two parts of power is output through a second inner gear after being converged at the double-row differential train; an odd number of external engagements of gears of the ordinary gear train are designed, so that the implementation of power split in a closed system is guaranteed; and high-torque output of the continuously variable transmission is guaranteed by the rational selection of the number of the gears of the double-row differential train. In order to meet the requirements of advancing and retreating, during the operation of engineering machinery, the device is provided with the reversing mechanism at the output end.

The invention relates to a high-current and high-power power converter, which comprises at least two parallel three-phase converters, a rectifying circuit and a filtering circuit, wherein an input endof each of the three-phase converters is connected with a power supply circuit, and an output end is connected to the filtering circuit by means of the rectifying circuit; each three-phase convertercomprises a switching network, a capacitor-inductor combination module and a transformer combination module which are sequentially connected in series; each transformer combination module comprises three phases of transformer combinations, each phase of transformer combination comprises at least two transformers, primary windings of the two transformers are connected in series or in parallel, andthe secondary windings are connected in series; and the primary windings and the secondary windings of each phase of transformer combination are respectively connected with one another to form a starconnection or a delta connection. By implementing he high-current and high-power power converter, special current sharing control is not required, the control is simple and reliable, switching tubes do not need to be used in parallel directly, the current sharing problem of parallel connection of the switching tubes is solved, the severe power imbalance caused by the difference of device parameters is solved, and the high-current and high-power requirements are satisfied.

The invention discloses an electric spindle device for face grinding. The electric spindle device for face grinding comprises a shell, and is characterized in that a spindle core connected with a face grinding wheel is arranged in the shell and supported by a front end spindle core supporting structure and a rear end spindle core supporting structure; a torque motor used for driving the spindle core to rotate is arranged between the spindle core and the shell; a circulating water cooling channel and a temperature sensor used for detecting the temperatures of the spindle core and the torque motor are arranged on the shell; a grinding fluid channel is formed in the spindle core; and an encoder is arranged at the rear end of the spindle core. The electric spindle device for face grinding has the performance of high precision, rigidity and torque, and the requirements for high torque for low-speed rough cutting and high power for high-speed finish machining of a face grinding machine can be met.

The invention discloses a video monitoring system based on an internet of things. The video monitoring system comprises an information processing center server, a monitoring mobile phone, an alarm receiving-monitoring system and camera modules, wherein the camera modules are arranged at each of monitoring points; the camera modules are in wired connection with the information processing center server; the information processing center server is connected with a power module; the information processing center server is further in remote signal connection with the monitoring mobile phone in hands of a worker via a GSM communication module; the monitoring mobile phone is in remote signal connection with the alarm receiving-monitoring system of a public security organization via the GSM communication module; each of the camera modules is further connected with a sensor module; and each of the sensor modules comprises a vibration sensor and a pyroelectric infrared sensor. According to the video monitoring system based on the internet of things disclosed by the invention, through a remote communication technology, the worker can view a monitoring condition whenever and wherever possible on a mobile terminal, and can alarm immediately in case of a dangerous circumstance; the convenience of the monitoring work is greatly improved, and the safety of a monitoring place is guaranteed.

The invention provides a large-power light-emitting diode (LED) heat dissipation mechanism comprising an evaporator, two guide pipes, an air convection heat dissipation condenser and water, wherein the evaporator is connected with the condenser through the two guide pipes, and the bottom of the evaporator is an insulated and heat-conductive LED substrate. The heat dissipation mechanism provides a low-cost solution which is light in weight, simple and reliable in structure and high in heat-conductive and heat dissipation efficiency for large-power LED application, particularly integrated large-power LED application.

The invention relates to a cabin assembly and a wind generating set. The cabin assembly is used for the wind generating set, the wind generating set comprises a tower frame and a generator, and the cabin assembly comprises a connecting seat used for connecting the tower frame and the generator and multiple cabin units which are arranged on the connecting seat; and each cabin unit comprises a cabin cover and a functional device, each cabin cover is provided with a containing cavity, and at least a part of each functional device is located in the corresponding containing cavity and used for being electrically connected with the generator. According to the cabin assembly and the wind generating set provided by the embodiment of the invention, the cabin assembly can meet the high-power requirement of the wind generating set, and design, machining and transportation are facilitated.

The invention discloses an electric driving system of a double-system petroleum drilling machine. The electric driving system comprises a three-phase alternating current bus, a direct current driving system and an alternating current driving system; the output ends of the three-wire alternating-current bus are connected with the direct current driving system and the alternating current driving system; the direct current driving system comprises a plurality of direct current speed regulation units; and the alternating current driving system comprises a plurality of rectifying units, a plurality of alternating current frequency conversion units and a plurality of energy consumption braking units. According to the electric driving system of the double-system petroleum drilling machine of the invention, the advantages of the direct current driving system and the alternating current driving system are combined; and the problems that the direct current driving system is low in power factor, narrow in speed regulation range and the like are solved, the situation that the alternating current driving system is high in cost is comprehensively considered, and the technical economy of the drilling machine is optimal.

The invention relates to a multi-group symmetrical array high-power optical fiber coupling semiconductor laser packaging structure and method, and belongs to the technical field of semiconductor laser packaging. The structure comprises a shell, an R-type single-group laser, an L-type single-group laser, a polarization beam combiner and an optical fiber coupler, the shell is a cuboid, one side of the cuboid is provided with a groove, a step is arranged on one side of the lower surface of the groove, the R-type single-group laser and the L-type single-group laser are arranged at the two ends of the upper surface of the step respectively, the polarization beam combiner is arranged on the lower surface of the groove in front of the step, and the optical fiber coupler is arranged on the shell on the other side of the lower surface of the groove. According to the invention, a problem of mutual interference possibly occurring in space beam combination of the high-power single-group laser is avoided, the light source quality is obviously improved, and meanwhile, the problem of non-uniform heat dissipation of the high-power single-group laser is avoided.

The invention relates to a power supply device of a robot and the robot. The power supply device of the robot comprises a control circuit and a power module, wherein the power module is connected withthe control circuit, the control circuit is used for controlling an output end of the power module to output a first voltage when the rotor is in a working state, the control circuit is also used forcontrolling the output end of the power module to output a second voltage when the rotor is in a charging state, and the first voltage is higher than the corresponding second voltage after charging is completed. When the rotor requires a relatively high working voltage, the large power demand also can be satisfied by the voltage (namely the first voltage) output from the output end of the power module under a joint effect of the control circuit and the power module even low-voltage charging only can be performed by an outdoor charger, so that the defect that the working demand can be satisfied only by performing high-voltage charging on a traditional outdoor high-voltage robot in the indoors can be overcome, and the intelligence of the robot is improved.

A computer video monitoring device with a terminal fault early warning function comprises a management platform server, a hand-held terminal and monitoring units arranged at all monitoring sites, wherein each monitoring unit comprises an infrared lamp, a camera and an encryption chip, the camera is connected with the management platform server by the encryption chip, and an analysis module is connected to the management platform server; the infrared lamp is connected with a light sensor; the management platform server is further in remote signal connection with the hand-held terminal with a 3G communication function by a 3G communication module. According to the computer video monitoring device with the terminal fault early warning function, the plurality of cameras connected with the management platform server are used for monitoring all monitoring sites in real time and are in centralized management on the management platform server uniformly, whether a fault occurs to the terminal can be judged timely and accurately, and the automation degree of the whole system and the working efficiency of the security management center are improved.

The invention discloses a flexible solar cell wing. The flexible solar cell wing comprises at least two solar cell single plates; each solar cell single plate comprises a flexible substrate provided with a solar cell array and a frame, the flexible substrate is arranged in the frame, and the frame provides rigid support for the flexible substrate; every two adjacent solar cell single plates are connected through a two-way coil spring hinge. The flexible solar cell wing disclosed by the invention has the advantages of being large in output power, high in rigidity, reliable in unfolding and thelike.

Provided is a novel distribution automatic video on-line monitoring device, comprising a monitoring management platform server, a hand-held terminal, and monitoring devices arranged at each monitoring point. The monitoring device comprises a life entity detection sensor, a camera and an encryption chip; the camera is in connection with the monitoring management platform server through the encryption chip; the monitoring management platform server is in connection with an analysis module; the camera is also in connection with the life entity detection sensor; the monitoring management platform server is also in remote signal connection with the hand-held terminal having a 3G communication function through a 3G communication module. The device performs real time monitoring on each monitoring point through a plurality of cameras in connection with the monitoring management platform server, and performs integrated management through a uniform monitoring management platform server, thereby improving the automation degree of a whole system and the work efficiency of a security management center.

The invention discloses a thermoelectric supply and storage integrated device suitable for remote areas. The device comprises a combiner box, an inverter, a water source heat pump, an air source heatpump, a water pump, a heat exchanger, a balance water tank, a phase change heat storage pool, a storage battery pack and the like; the electric energy source of the device is a PV / T photovoltaic panel; electric energy generated by the photovoltaic panel is transmitted to the inverter through the combiner box; after being subjected to direct-current and alternating-current conversion, the electricenergy is converged into a power grid; a water source of the water source heat pump in the device is water with certain heat in a PV / T system solar water distributing and collecting device, water circulation is achieved by driving the water pump, and the water serves as a carrier to transfer heat; and the air source heat pump is connected with an outdoor unit, sucks in air, obtains heat and then exhausts cold air. The integrated device can effectively integrate power supply, heat supply, energy storage, heat storage subsystems and other decentralized subsystems; and the existing key problems of system planning, system operation, energy comprehensive utilization and the like of a new energy electric heating supply system are solved.

The invention relates to a special vehicle chassis. An input gear of a full-power power takeoff and an output shaft of an engine are connected; a first output shaft of the full-power power takeoff and vehicle-loaded equipment are connected; a second output shaft of the full-power power takeoff and a clutch are connected; the clutch is connected with a gearbox; the gearbox is connected with a first transmitting shaft; the first transmitting shaft is connected with an inter-axle decelerator which is connected with a second transmitting shaft; the second transmitting shaft is connected with a rear axle; the special vehicle chassis also comprises a controlling system which controls the inter-axle decelerator to enable a vehicle to enter a low driving speed state. According to the special vehicle chassis disclosed by the invention, the deficiency that in the prior art, the power required when the vehicle-loaded equipment works is large, so that an independent engine needs to be matched for supplying energy to the vehicle-loaded equipment is overcome, the comprehensive utilization and the reasonable matching of three techniques of the full-power power takeoff, the inter-axle decelerator and engine long-range accelerator controlling switch control are realized, and the requirements that a road sweeping vehicle, a cleaning road sweeping vehicle and a guardrail cleaning vehicle run at a low speed but the vehicle-loaded equipment needs large power to work can be well met by only using the chassis.

The invention discloses a hypersonic flight vehicle cooling and semiconductor thermoelectric power generation integrated system, and relates to the hypersonic flight vehicle cooling and semiconductor thermoelectric power generation integration technology. The aim is to satisfy the thermal protection and power supply demands of the long-endurance hypersonic flight. N-type semiconductor thermoelectric materials (2) and P-type semiconductor thermoelectric materials (3) of the system are arranged at intervals and are orderly connected in series to form a semiconductor thermoelectric power generation device through a flow deflector (5); heat-conducting insulating layers (4) tightly clung to the flow deflector (5) are arranged at two sides of the semiconductor thermoelectric power generation device; the outsides of two heat-conducting insulating layers (4) are respectively a low-temperature channel (1) and a high-temperature channel (6), and the low-temperature channel (1) is communicated with the high-temperature channel (6). A cooling system and a power generation system are integrated through the system, the structure quality is lowered, the quality punishment is reduced, and the system is suitable for a hypersonic flight vehicle.

The invention relates to an image acquisition method which comprises the following steps: receiving a trigger signal, and generating a sampling control signal and a light source control signal according to the trigger signal; according to the light source control signal, alternately generating n optical scenes at a scene switching frequency k0 in an image acquisition process; according to the sampling control signal, carrying out image acquisition on a sampled object at a line frequency k1 under n optical scenes alternately generated at a scene switching frequency k0 to obtain an image pixel signal, wherein k1 = N * k0, and N is an integer greater than or equal to n; and performing image separation on the image pixel signals to obtain acquired images corresponding to the n optical scenes.According to the invention, only one set of camera and the industrial personal computer for controlling the camera are used to realize acquisition of a plurality of optical scene images at one time, so that the use cost and the maintenance cost of the system are reduced, and the image acquisition efficiency is improved. The invention further comprises an image acquisition system.

The invention discloses an electric motor coach double-source intelligent steering system which comprises an environment sensing unit, an upper-layer controller, a lower-layer controller, a first inverter, a second inverter, a 48-volt low-voltage storage battery, a high-voltage power battery pack, an open winding permanent magnet synchronous motor, a speed reducer, a torque sensor, a steering tierod, a steering tie rod, a ball screw and a steering transmission mechanism, each steering transmission mechanism is connected with one steering wheel. The invention further discloses a steering cooperative control method which comprises a longitudinal and transverse cooperative self-evaluation optimization decision method and a high-low double-source master-slave cooperative control method undermultiple performance targets. A basis is provided for achieving L4-level automatic driving, the high-power requirement during steering of the electric motor coach can be met, power consumption duringsteering is reduced through cooperative work of the high-voltage power source and the low-voltage power source, energy is saved, reliability is higher, and steering accidents caused by faults of a single power source of the electric motor coach are avoided.

The invention discloses a dual-source intelligent steering system for an electric passenger car, which comprises an environment sensing unit, an upper-layer controller, a lower-layer controller, a first inverter, a second inverter, a 48-volt low-voltage storage battery connected, a high-voltage power battery pack A phase-connected, open-winding permanent magnet synchronous motor, a reducer, a torque sensor, a steering tie rod, a steering tie rod, a ball screw and a steering transmission mechanism, and each steering transmission mechanism is respectively connected to a steering wheel. The invention also discloses a steering cooperative control method, including a vertical and horizontal cooperative self-evaluation optimization decision-making method and a high-low dual-source master-slave cooperative control method under multiple performance objectives. The invention provides a basis for realizing L4 level automatic driving, which can not only meet the high power demand of electric passenger cars when turning, but also use high and low voltage dual power sources to work together to reduce power consumption when turning, save energy, and have higher reliability and will not Make the electric passenger car turn to the accident because of single power source failure.