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2351 results about "Power performance" patented technology

Monitoring System for Power Grid Distributed Power Generation Devices

InactiveUS20110130982A1Restoring power performance of powerReducing false alarmElectric devicesPower measurement by current/voltageData acquisitionData interface
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 comprises
  • at 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.
Owner:IBM CORP

Intelligent multi-loop electric automobile cooling system

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.
Owner:SHANGHAI COTECH AUTOMOTIVE ENG CORP LTD

Lithium ion battery silicon carbide composite anode material and preparation method thereof

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.
Owner:BTR NEW MATERIAL GRP CO LTD

Graphene-based nano iron oxide composite material and preparation method thereof

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.
Owner:CHINA UNIV OF MINING & TECH

Pure electric vehicle control unit calibration system based on CAN (controller area network) bus and calibration method

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.
Owner:张化锴

Series-parallel hybrid power automobile powertrain system and power distribution control method thereof

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.
Owner:CHERY AUTOMOBILE CO LTD

Silicon/graphene laminar composite material for lithium ion battery cathode and preparation method thereof

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.
Owner:深圳清研紫光科技有限公司
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