2360 results about "Power performance" patented technology

The invention is related to a cathode material comprising particles having a lithium metal phosphate core and a pyrolytic carbon deposit, said particles having a synthetic multimodal particle size distribution comprising at least one fraction of micron size particles and one fraction of submicron size particles, said lithium metal phosphate having formula LiMPO4 wherein M is at least Fe or Mn.Said material is prepared by method comprising the steps of providing starting micron sized particles and starting submicron sized particles of at least one lithium metal phosphate or of precursors of a lithium metal phosphate; mixing by mechanical means said starting particles; making a pyrolytic carbon deposit on the lithium metal phosphate starting particles before or after the mixing step, and on their metal precursor before or after mixing the particles; optionally adding carbon black, graphite powder or fibers to the said lithium metal phosphate particles before the mechanical mixing.

An OLED display for producing a full color image, comprising a plurality of at least four different colored pixels including three different colored addressable gamut-defining pixels and a fourth addressable within-gamut pixel, each pixel having an organic light-emitting diode with first and second electrodes and one or more organic light-emitting layers provided between the electrodes; the OLED display having a selected display white point, display peak luminance, gamut-defining pixel peak luminances and within-gamut pixel peak luminance; and drive circuitry for regulating luminance of the organic light-emitting diode of each of the colored pixels wherein the sum of the gamut-defining pixel peak luminances is less than the display peak luminance.

Various arrangements for controlling a head-mounted display of an augmented reality display are presented. A head-mounted display may be provided and may be configured to present a virtual field of view comprising a virtual object superimposed on a real-world scene. A controller may be provided and configured to modify display of the virtual object by the head-mounted display based on a first color of a real-world object in the real-world scene. The virtual object in the virtual field of view may be superimposed over the real-world object. A lumen output of the head-mounted display for displaying the virtual object may be decreased.

A method and apparatus for improving power performance of a wireless adapter which adopts a time slicing scheme by dividing a beacon interval into multiple slices, and assigning these slices to the stations through the beacon frame. The stations wakeup at the appointed slices to receive their buffered frames from an access point, and may enter into sleep state once the transactions conclude. A further embodiment including formatting data into a control frame for use in a wireless local area network, the frame including an indication, for each station associated with the wireless local area network, whether frames are buffered awaiting transmission to each respective station, a number of time intervals between control frames, and at which time interval the transmission of the buffered frames will begin for each station having buffered frames awaiting transmission.

In some embodiments, a method and apparatus for power performance monitors for low-power program tuning are described. In one embodiment, the method includes the computation of power consumption levels of instructions of an application. Once consumption levels are computed, instruction sequences of the application are identified that exhibit an excess power consumption level. For the identified instruction sequences, the application program is recompiled to reduce power consumption levels of one or more of the identified instruction sequences. Other embodiments are described and claimed.

An OLED display for producing a full color image, comprising a plurality of at least four different colored pixels including three different colored addressable gamut-defining pixels and a fourth addressable within-gamut pixel, each pixel having an organic light-emitting diode with first and second electrodes and one or more organic light-emitting layers provided between the electrodes; the OLED display having a selected display white point, display peak luminance, gamut-defining pixel peak luminances and within-gamut pixel peak luminance; and drive circuitry for regulating luminance of the organic light-emitting diode of each of the colored pixels wherein the sum of the gamut-defining pixel peak luminances is less than the display peak luminance.

A system and method for controlling power and performance in a microprocessor system includes a monitoring and control system integrated into a microprocessor system. The monitoring and control system includes a hierarchical architecture having a plurality of layers. Each layer in the hierarchal architecture is responsive to commands from a higher level, and the commands provide instructions on operations and power distribution, such that the higher levels provide modes of operation and budgets to lower levels and the lower levels provide feedback to the higher levels to control and manage power usage in the microprocessor system both globally and locally.

A plural-data transmission Start message is transmitted prior to transmission of plural data to an intermittent operation type wireless communications terminal, and when transmission of plural data is completed, a plural-data transmission End message is transmitted. The terminal which received the plural-data transmission Start message can change over the sleep period of the aforesaid intermittent operation to a shorter sleep period. Thereby, an improvement in the response performance in the case of plural-data delivery can be simultaneously obtained while maintaining the low power performance of a sensor node.

The invention discloses a power system of a mixed power automobile and a control method thereof. The power system comprises a rear electric motor drive system, an integrated type starting generator drive system, a power supply system and a control system; the rear electric motor drive system comprises a rear electric motor, a speed reducer, a differential and a rear electric motor controller and separately drives rear wheels; the integrated starting generator drive system comprises an engine, a front electric motor, a gear box, a front differential and a front electric motor controller; as the nose cabin power assembly, the power system can work under the integrated starting generator drive mode, the pure electric drive mode, the regenerative braking mode or the four-wheel drive mode. The invention omits the middle drive device in a traditional four-wheel drive vehicle, has higher drive flexibility, can reduce the automobile weight, not only can meet the requirements of a SUV vehicle for the complete-vehicle power performance, trafficability characteristic and the like, but also can achieve the purposes of energy saving and emission reduction.

The invention discloses a power battery device with a phase-change material cooling system, which comprises a bolt, a plurality of battery monomers, a box cover venting hole, an electrode connecting shaft, a box body top cover, a side venting hole and a frame body, wherein the battery monomers use batteries as base bodies, a shell is arranged outside the battery monomers, phase-change material is filled between the batteries and the shell and is sealed by insulating rubber; a battery box body is provided with the venting holes for radiating; the power battery device can realize that the temperature of batteries of a power device can be effectively reduced under more rugged thermal environment and can meet the requirement of the balance of temperature distribution among the battery monomers, thereby achieving the best operation condition of the power device, and prolonging the battery service life and improving the power performance of the power device. The adopted phase-change material has larger latent heat of phase-change, perfect phase-change temperature, economic and safe material, and high recycle utilization efficiency.

The invention relates to an autonomously working monitoring system (10), a method for monitoring and maintenance of power grid distributed power generation devices (14) and a related computer program product. The system comprises at least one power performance monitoring unit (12) for monitoring, analyzing and storing at least power performance data (70) of at least one power generation device (14);at least one power generation device (14) comprising at least one power generation module (16) for generation of electric power and at least one inverter module (18) for feeding in electric power of said power generation module (16) to a power grid (20);and an external network (22) connecting one or more power generation devices (14) with said power performance monitoring unit (12).The power generation device (14) further comprisesat least one data acquisition module (24) for measuring of power output of each power generation module (16);at least one inverter measuring module (26) for measuring of power output of said inverter (18) to the power grid (20);a data interface module (28) in power line communication with said data acquisition module (24), and in communication with said inverter measuring module (26) and said external network (22) for sending power performance data (70) of said power generation device (14) to said power performance monitoring unit (12) including power generation module ID (66) and inverter ID (68), and / or for autonomously sending a maintenance notice for requesting a maintenance action based on at least a specific power performance pattern.

A system and method for controlling power and performance in a microprocessor system includes a monitoring and control system integrated into a microprocessor system. The monitoring and control system includes a hierarchical architecture having a plurality of layers. Each layer in the hierarchical architecture is responsive to commands from a higher level, and the commands provide instructions on operations and power distribution, such that the higher levels provide modes of operation and budgets to lower levels and the lower levels provide feedback to the higher levels to control and manage power usage in the microprocessor system both globally and locally.

Data processing workload control in a data center is provided, where the data center includes computers whose operations consume power and a workload controller composed of automated computing machinery that controls the overall data processing workload in the data center. The data processing workload is composed of a plurality of specific data processing jobs, including scheduling, by the workload controller in dependence upon power performance information, the data processing jobs for execution upon the computers in the data center, the power performance information including power consumption at a plurality of power-conserving states for each computer in the data center that executes data processing jobs and dispatching by the workload controller the data processing jobs as scheduled for execution on computers in the data center.

The invention discloses a model-based anti-shake control method for a motor-driven vehicle, which comprises the following steps of: obtaining a motor torque request, performing integral estimation on the rotating speed of a motor, performing negative feedback estimation on a rotating speed error and resistance torque, and performing low-pass filtering. The problem that an electrically-driven vehicle shakes because the motor shakes is solved. The motor torque request is subjected to torque compensation by a model-based rotating speed feedback control method in a closed loop control mode, so that the problem that the vehicle shakes and vibrates under specific working conditions is solved, and the driving comfort of the vehicle is improved; the problem that the vehicle shakes when a vehicle speed exceeds a vehicle speed interval corresponding to the resonant frequency of a power system under the working conditions of starting and accelerating, low-speed rapid accelerating and low-speed rapid decelerating is solved; and a way for solving the problem that the vehicle shakes on the premise of not sacrificing the power performance and braking performance of the vehicle is provided.

The invention relates to an intelligent multi-loop electric automobile cooling system. The intelligent multi-loop electric automobile cooling system comprises a power battery pack, an armature module, a battery radiator, an armature radiator, electric water pumps, straightway valves, three-way valves, a PTC heater and a heat exchanger. The cooling system is provided with the two electric water pumps, the two straightway valves and the three three-way valves, and a plurality of loops are formed through pipeline connection. Compared with the prior art, the intelligent multi-loop electric automobile cooling system is provided with the multiple three-way valves and the straightway valves, pipelines are connected to form the loops meeting different cooling or heating needs, the loops are selectively opened or closed according to the characteristics and working states of the electric automobile power battery pack and the armature module, thus temperature balance of an electric automobile is ensured, efficient operation of the electric automobile is ensured, and system energy conservation is significant. Power battery pack cooling and armature module cooling are associated with each other, thus automobile endurance mileage becomes longer, and the power performance and economy of the automobile become better.

This invention describes a method of building complementary logic circuits using junction field effect transistors in silicon. This invention is ideally suited for deep submicron dimensions, preferably below 65 nm. The basis of this invention is a complementary Junction Field Effect Transistor which is operated in the enhancement mode. The speed-power performance of the JFETs becomes comparable with the CMOS devices at sub-70 nanometer dimensions. However, the maximum power supply voltage for the JFETs is still limited to below the built-in potential (a diode drop). To satisfy certain applications which require interface to an external circuit driven to higher voltage levels, this invention includes the structures and methods to build CMOS devices on the same substrate as the JFET devices.

The invention discloses a lithium ion battery silicon carbide composite anode material and a preparation method thereof and aims to solve the technical problem of improving the cycling stability of a silicon carbide cathode. The lithium ion battery silicon carbide composite anode material consists of the following components in percentage by mass: 85 to 75 percent of graphite and 15 to 25 percent of silica particles, wherein the nano silica particles are dispersed on a graphite carrier to form a nuclear shell structure and are 5 to 16 mum in granularity. The preparation method comprises the following steps of: preparing a graphite dispersing agent and a silicon grinding dispersing agent; adding the silicon grinding dispersing agent into the graphite dispersing agent; and performing thermal treatment. When the method is compared with the prior art, silicon atoms are dispersed on a graphite atomic nucleus by a cation-anion charge absorption method, so that the silicon atoms can uniformly wrap the surface of the graphite, the dispersity of silicon is effectively improved in a silicon carbide composite material preparing process, the initial efficiency and the cycling stability of the silicon carbide composite anode material are improved, and a battery using the material as an anode material has relatively high safety, multiplying power performance and cycle performance.

Disclosed is a spark-ignition gasoline engine, which comprises control means operable, when an engine operation zone is a high-load operation zone including a WOT region within at least a low speed range, to adjust a closing timing of an intake valve in such a manner as to maintain an effective compression ratio at 13 or more, and retard an ignition timing to a point within a predetermined stroke range just after a top dead center of a compression stroke, wherein the effective compression ratio is calculated based on an intake-valve closing timing defined by a valve lift amount of 1 mm. The present invention can provide a spark-ignition gasoline engine having both a low-cost performance and a high engine-power performance even in a high-load operation zone (particularly WOT region) in a low speed range.

A GaN semiconductor device with improved heat resistance of the Schottky junction electrode and excellent power performance and reliability is provided. In this semiconductor device having a Schottky gate electrode 17 which is in contact with an AlGaN electron supplying layer 14, a gate electrode 17 comprises a laminated structure wherein a first metal layer 171 formed of any of Ni, Pt and Pd, a second metal layer 172 formed of any of Mo, Pt, W, Ti, Ta, MoSi, PtSi, WSi, TiSi, TaSi, MoN, WN, TiN and TaN, and a third metal layer formed of any of Au, Cu, Al and Pt. Since the second metal layer comprises a metal material having a high melting point, it works as a barrier to the interdiffusion between the first metal layer and the third metal layer, and the deterioration of the gate characteristics caused by high temperature operation is suppressed. Since the first metal layer contacting the AlGaN electron supplying layer 14 has a high work function, the Schottky barrier is high, and superior Schottky contact is obtained.

The invention discloses a graphene-based nano iron oxide composite material and a preparation method thereof. By the method, iron oxide nano granules with uniform diameter and controllable shape and components can be loaded on graphene. The method comprises the following steps of: uniformly dispersing graphite oxide into deionized water by adopting an ultrasonic method to obtain graphene oxide solution; adding an iron salt precursor into the obtained solution and mixing the precursor and the solution uniformly, adjusting the pH of the solution, and hydrolyzing the iron salt; putting the mixed solution into a reaction kettle and performing hydrothermal reaction; and finally, cleaning and freeze-drying the obtained product to obtain the graphene-based nano iron oxide composite material. The raw materials are common and easily obtained, the cost is low, and the preparation process is simple, safe and environmentally-friendly; the prepared graphene-based nano iron oxide composite material has good structural stability and monodispersity; when the composite material is used as a lithium iron battery electrode material, the charge / discharge capacity can reach over 1,000mAh / g; and the composite material has good multiplying power performance and cycle life.

The invention relates to a thermal management system for a pure electric vehicle, which is characterized in that it includes an electric drive system and a charger cooling circuit, a power battery cooling circuit, a power battery charging heating circuit, a passenger compartment heating circuit and a passenger compartment refrigeration circuit; The electric drive system and charger cooling circuit includes radiators, fans, kettles connected by pipelines, the electric drive system and charger cooling water pump installed in the circuit, as well as the motor controller and DCDC, as well as the charger and motor. The radiator realizes liquid-gas heat exchange to cool the heat dissipation components. Improve the environmental adaptability of electric vehicles, the power performance in high-temperature environments, the durability of key components, and the energy utilization efficiency of the entire vehicle.

The invention discloses a pure electric vehicle control unit calibration system based on CAN (controller area network) bus, which comprises an upper computer with two-way communication and a lower computer with two-way communication. The upper computer comprises a data storage module, an MAP (macro assembly program) chart optimization module, a parameter calibration module and a CAN bus communication processing module. The lower computer is a pure electric vehicle control unit (VCU) and comprises a CAN bus communication module, a data acquisition module, a calibrated data storage module and a control algorithm module. The invention further provides a pure electric VCU online calibration method based on the CAN bus. By introducing the CAN bus into the design of the electric vehicle control unit calibration system, the invention realizes online optimization of the control parameters of power, response speed, electricity consumption and the like of the pure electric vehicle, sloves the problems of difficulty in modifying the parameters, long development cycle and poor maneuverability in the prior art, and solves the problem that differences of the operating conditions and diversity of the requirements on power performance and life mileage of the vehicles under different uses, requirements to the control parameters of the vehicle control units are different due to the type variety of pure electric vehicles.

Semiconductor device circuits and methods are provided for adjusting core processor performance based on usage metrics. Metric detection and adjustment are performed in digital logic hardware guided by registers providing maximum and minimum frequency settings, without intervening input from system software or firmware, thus greatly speeding the processor performance adjustment. Power-performance drivers provide applications or the operating system ability to specify maximum and minimum frequency requirements.

Disclosed are systems, methods, and computer program products for managing power states in processors of a data processing system. In one embodiment, the invention is directed to a data processing system having dynamically configurable power-performance states (“pstates”). The data processing system includes a processor configured to operate at multiple states of frequency and voltage. The data processing system also has a power manager module configured to monitor operation of the data processing system. The data processing system further includes a pstates table having a plurality of pstate definitions, wherein each pstate definition includes a voltage value, a frequency value, and at least one unique pointer that indicates a transition from a given pstate to a different pstate. The voltage value, frequency value, and unique pointer of a given pstate definition are configurable, during operation of the data processing system, by the power manager module in response to changes in the operating parameters of the data processing system.

The invention discloses a series-parallel hybrid power automobile powertrain system and a power distribution control method of the series-parallel hybrid power automobile powertrain system. The powertrain system comprises an engine, an automobile integrated starter generator (ISG), a planetary gear train, a driving motor, a power battery pack, an engine clutch, an ISG brake, a planetary gear train clutch and a driving motor clutch, wherein the engine clutch, the ISG brake, the planetary gear train clutch and the driving motor clutch are controlled by a vehicle control unit. The ISG is directly integrated on a sun gear of the planetary gear train and is provided with a continuously variable transmission (CVT) and a CVT brake. By the adoption of an electric driving priority control strategy, the operation point of the engine is regulated by fully utilizing the operating characteristics of the CVT, so more automobile patterns can be selected on complex and different working conditions; besides, the driving motor and the ISG are used for coordinating operation of the engine, so that the engine operates on an optimal curve most of time; since the power performance of an automobile is optimized by coupling the rotating speed and torque, the running efficiency of the engine and the fuel economy of the whole automobile are improved remarkably, emission is reduced, and remarkable energy conservation and emission reduction effects are achieved.

The present invention is drawn to a high power electrochemical energy storage device in a bipolar configuration, comprising at least n stackable cells (20) in bipolar configuration wherein subgroups of m cells are electronically monitored (63). The storage cells (20) have a lithium ion insertion anode (24) and a lithium ion insertion cathode (26), a separator (36), an electrolyte system (36), and a leak-proof seal structure (51). A number of embodiments are disclosed, characterized by a favorable range of m values, in combination with the anode-to-cathode capacity ratio, electrolyte conductivity, and other battery key features, thereby providing a high power device providing long cycle life and excellent power performance over many thousand charge and discharge cycles while minimizing the cost for electronic monitoring. Additionally, the present invention is drawn to a device combining two or more groups of stackable cells in bipolar configuration, either in series or in parallel or any combination thereof, so as to create a high power, high voltage energy storage device.

A low power charge pump is disclosed. A pump driving node of a first pump stage is selectively coupled to a pump driving node of the subsequent pump stage. Subsequent to a transfer of charge from a first pump stage to a subsequent stage, the first and subsequent pump driving nodes are coupled. Residual charge on a first stage pump driving node is thereby transferred to a subsequent pump driving node. Subsequent to the transfer of charge from the first pump driving node to the second pump driving node, the nodes are uncoupled. By selectively coupling a first pump stage to a pump driving node of the subsequent pump stage, the first pump driving node may pre-charge the subsequent pump driving node, thereby reducing the energy that must be provided by clock driving circuitry to produce a positive-going transition of a driving clock. Advantageously, pre-charging energy is taken from the first stage, reducing the energy that was heretofore dissipated by clock driving circuitry during a negative-going clock signal transition. In this novel manner conversion efficiency of a charge pump device may be beneficially increased, providing enhanced low power performance.

A miniaturized antenna system is characterized non-destructively through the use of a scanner that measures its near-field radiated power performance. When taking measurements, the scanner can be moved linearly along the x, y and z axis, as well as rotationally relative to the antenna. The data obtained from the characterization are processed to determine the far-field properties of the system and to optimize the system. Each antenna is excited using a probe station system while a scanning probe scans the space above the antenna to measure the near field signals. Upon completion of the scan, the near-field patterns are transformed into far-field patterns. Along with taking data, this system also allows for extensive graphing and analysis of both the near-field and far-field data. The details of the probe station as well as the procedures for setting up a test, conducting a test, and analyzing the resulting data are also described.

The invention relates to a preparation method of a silicon / graphene laminar composite material for lithium ion battery cathode. The composite material adopts a laminar sandwich structure, silicon nano-particles are dispersed on each lamina of the grapheme, the laminas of the grapheme are separated from one another by the silicon nano-particles and the edges of the laminas are in lapped joint so as to constitute a laminar conductive network structure. The preparation method thereof comprises the steps of: formulating anhydrous silicon tetrachloride, surface active agent, sodium naphthalene and graphite oxide to tetrahydrofuran solution, adding the tetrahydrofuran solution into a reactor for reaction in vacuum at the temperature ranging from 380 to 400 DEG C, filtering the reactant to result in the product, and then washing, drying and heating the product to obtain the silicon / grapheme composite material. The preparation method of the invention has the advantages of simple preparation process and great easiness for industrial production; and the silicon / graphene laminar composite material prepared according to the method includes excellent conductivity, power performance, electrochemical activity and cycle stability, and is particularly suitable for manufacturing lithium ion battery cathode.