180results about How to "Improve load characteristics" patented technology

A non-aqueous electrolyte for a secondary battery includes a solvent and an electrolyte containing a lithium salt. The solvent contains 4-fluoroethylene carbonate and a chain carboxylic ester represented by the formula R₁COOR₂, where R₁ and R₂ are alkyl groups having 3 or less carbon atoms. The amount of the 4-fluoroethylene carbonate is 7 volume % or greater with respect to the total amount of the solvent.

An energy storage device comprising a positive electrode composed of a polarizable electrode including activated carbon, a negative electrode using a material capable of inserting and extracting lithium ions as an anode active material, and a nonaqueous electrolyte, wherein lithium-containing porous metal oxide is included as the anode active material contained in the negative electrode, and as the lithium-containing porous metal oxide, for example, porous Li_xSiO is used, and a mixture of the lithium-containing porous metal oxide and a carbon material capable of inserting and extracting lithium ions is preferably used.

A lithium nickel manganese cobalt composite oxide used as a cathode active material for a lithium rechargeable battery, the composite oxide shown by the below general formula (1):

Li_xNi_1-y-zMn_yCo_zO₂  (1)

(wherein 0.9≦x≦1.3, 0<y<1.0, and 0<z<1.0; and wherein y+z<1),

the lithium nickel manganese cobalt composite oxide having an average particle size of 5-40 μm, a BET ratio surface area of 5-25 m²/g, and a tap density of equal to or higher than 1.70 g/ml.

Provided are: a non-aqueous electrolyte solution for a secondary battery that exhibits both excellent low-temperature discharge characteristics and excellent cycle characteristics on a long-term basis; and a secondary battery.

A non-aqueous electrolyte solution for a non-aqueous electrolyte secondary battery that has a positive electrode and a negative electrode capable of the absorbing and releasing of a metal ion, and a separator,

• • the non-aqueous electrolyte solution comprising, in addition to an electrolyte and a non-aqueous solvent, 0.01 mass % or more to less than 3 mass % of a compound having one or more partial structure represented by the following general formula (1) and two or more isocyanate groups in the molecule:

(In the general formula (1), R represents hydrogen or a C₁-C₁₂ organic group that may contain an isocyanate group and is constituted of atoms selected from the group consisting of hydrogen atom, carbon atom, nitrogen atom, oxygen atom, sulfur atom, phosphorus atom, and halogen atom).

The invention discloses a game theory-based multi-micro-grid interconnection running optimization method. The method includes the following steps: analyzing load demand response characteristics of allmicro-grids, and constructing a micro-grid group model; then initializing a system, establishing a day-ahead game model, and calculating a net load of the i-th micro-grid in a j-th period and a totalnet load amount of the system by day-ahead forecast data; obtaining respective optimal strategies by solving by all the micro-grids according to initial status, carrying out information exchange in amicro-grid group, sharing respectively obtained best strategy information, and updating status information; judging, by a system control center, whether Nash equilibrium is reached, and if the systemmeets an equilibrium condition, ending a game, and outputting a final optimization strategy set; and otherwise, turning ahead to carry out optimization again according to updated status information.The method can give consideration to both the stability and the economy of the system, and realize individual benefit maximization and optimal group running of the micro-grids at the same time.

A non-aqueous electrolyte secondary battery is produced using a non-aqueous electrolyte including: a non-aqueous solvent that primarily contains a solvent mixture of ethylene carbonate and propylene carbonate and includes a fluorine-substituted ether having a divalent group represented by a formula: —CFX—CH(CH₃)—O—, where X is a hydrogen atom or fluorine atom, in a molecule thereof; and a lithium salt that is dissolved in the non-aqueous solvent. The non-aqueous electrolyte has favorable wettability towards a polyolefin separator, and improves the cycle characteristics and the load characteristics of the non-aqueous electrolyte secondary battery.

Provided are a nonaqueous electrolyte battery having improved durability properties such as cycle and storage properties, and improved load characteristic, and a nonaqueous electrolyte solution that is appropriate for the nonaqueous electrolyte battery. The nonaqueous electrolyte solution contains a lithium salt and a nonaqueous solvent that dissolves the lithium salt. The nonaqueous electrolyte solution also contains a compound represented by formula (1) and a specific compound that acts in conjunction with the aforementioned compound.

The invention provides an urban electric vehicle charging decision-making method based on a typical load dynamic game, which relates to the technical field of charging electric vehicles. According tothe short-term load curve clustering of power network, the typical load types of users in a certain area are obtained, and the ideal charging load curve of electric vehicle is calculated, subject to charge demand constraint, charging time constraint, electric vehicle charging quantity limit, power load curve, distribution network capacity as a boundary condition, the minimum error between the charging load curve and the ideal charging load curve as a constraint condition, the lowest user cost as an objective function, the establishment of optimization equation, and solution, to obtain the charging strategy, through the dynamic game decision-making results to determine whether to charge the electric vehicle. The method provided by the invention can improve the load characteristic of the electric network, minimize the fluctuation of the electric network after the electric vehicle is connected to the electric network, improve the load rate of the electric equipment, and on this basis, minimize the charging cost of the electric vehicle user.

The invention relates to a lithium-transition metal compound powder for a positive-electrode material for lithium secondary battery which comprises secondary particles configured of primary particles having two or more compositions and a lithium-transition metal compound having a function of being capable of insertion and release of lithium ions, wherein the powder gives a pore distribution curve having a peak at a pore radium 80 nm or greater but less than 800 nm, and the secondary particles include primary particles of a compound represented by a structural formula including at least one element selected from As, Ge, P, Pb, Sb, Si and Sn, wherein the primary particles of the compound are present at least in an inner part of the secondary particles.

A lithium polymer secondary battery comprising a negative electrode, a positive electrode and an electrolyte layer between both electrodes, wherein the negative electrode and the positive electrode each has a solid electrolyte prepared by incorporating an organic electrolytic solution into a polymer, the polymer is obtained by solidifying a precursor solution containing vinylene carbonate and a content of vinylene carbonate in the precursor solution for the positive electrode is smaller than that in the precursor solution for the negative electrode.

A non-aqueous electrolyte secondary battery includes a positive electrode having a positive electrode mixture, a negative electrode, and a non-aqueous electrolyte. The positive electrode mixture contains as a positive electrode active material Li_1+x(Mn_yNi_zCo_1−y−z)_1−xO₂, where 0<x<0.4, 0<y≦1, and 0≦z≦1. The positive electrode mixture has a filling density of from 2.2 g/cm³ to 3.6 g/cm³, and a film thickness of less than 50 μm.

Provided are a nonaqueous electrolyte solution having improved durability properties in terms of cycling, storage and the like and improved discharge characteristic at a high current density, and a nonaqueous electrolyte battery that uses that nonaqueous electrolyte solution. The nonaqueous electrolyte solution containing a lithium salt and a nonaqueous solvent that dissolves the lithium salt, wherein the nonaqueous electrolyte solution contains a compound represented by formula (1) and at least one compound selected from the group consisting of a compound having a cyano group, a cyclic ester compound having a sulfur atom and a compound having an isocyanate group.

The objective of the present invention is to provide: a nonaqueous electrolyte solution which improves cycle characteristics and load characteristics, while suppressing the generation of a gas; and a nonaqueous electrolyte secondary battery which uses this nonaqueous electrolyte solution. The present invention relates to a nonaqueous electrolyte solution which is used in a nonaqueous electrolyte secondary battery that is provided with a positive electrode and a negative electrode that have active materials capable of absorbing and desorbing metal ions. This nonaqueous electrolyte solution contains a compound represented by general formula (1), and additionally contains a specific amount of a carboxylic acid or at least one compound that is selected from the group of specific compounds such as a cyclic carbonate compound having an unsaturated bond.

A positive electrode for an alkaline battery of the present invention includes a spinel-type manganese oxide as a positive electrode active material, wherein the spinel-type manganese oxide has a potential of 0.26 to 0.34 V with respect to a Hg/HgO reference electrode, and the content of the spinel-type manganese oxide in the entire positive electrode active material is not less than 30 mass %. Further, an alkaline battery of the present invention includes the above-described positive electrode for an alkaline battery of the invention, a negative electrode and an electrolyte.

The invention discloses an electronically controlled steering device for a forklift, which is low in cost and power consumption, and consists of a steering handle (1), a steering shaft (3), direction wheels (4), a directional wheel axle (15), a DC motor (7), a steering controller (6) connected with a DC power supply on the forklift, a gearbox (9), a first transmission mechanism, a second transmission mechanism, a first sensor (5), a second sensor (8) and a third sensor (10), wherein the first sensor (5) is fixed on a vehicle body of the forklift and is connected with the lower part of the steering shaft (3) through the second transmission mechanism; the second sensor (8) is fixed on the DC motor (7) and is fixedly connected with a rotating shaft (7.1); the third sensor (10) is arranged between the vehicle body of the forklift and the second transmission mechanism; and the first sensor (5), the DC motor (7), the second sensor (8) and the third sensor (10) are all electrically connected with the steering controller (6).

A nonaqueous electrolyte composition includes: a nonaqueous solvent; an electrolyte salt; a matrix resin; a filler; and a surfactant.

The invention provides an independent micro grid optimization configuration method considering price-type demand response. The method includes steps of S1, performing discretization on 24 hours in one day and dividing the 24 hours into T periods, wherein the time length of the t period is Delta t and t is an arbitrary period, drawing a curve of regular load in a micro grid; S2, drawing a short period new energy power generation power curve, making real time electricity prices for micro grid users according to the new energy power generation power curve and the regular load curve, wherein a low electricity price is used in periods when the new energy power generation power curve is greater than the regular load curve and a high electricity price is used in periods when the new energy power generation power curve is smaller than the regular load curve; S3, establishing a demand response optimization model and guiding user electricity consumption behaviors; S4, determining a wind/light/diesel/storage micro power source power generation model and establishing a micro grid optimization configuration model by taking an annual value such as a life cycle and the like of the micro grid as a target; S5, solving the established micro grid optimization configuration model and obtaining an optimization configuration scheme. The method provided by the invention is good in economical benefits.

An electric automobile interactive response control method taking distributed power consumption into consideration under a micro power grid is disclosed. The method includes the steps of S1, conducting discretization processing for continuous 24-hour time in one day, S2, recording battery information and client charging demand information of newly added electric automobiles by charge and discharge facilities, setting the initial time as an accessing time, S3, reading load information of the current moment, S4, predicting photovoltaic output, S5, developing a virtual electricity price mechanism based on the photovoltaic output and load supply and demand situation in combination with real time electricity price and inclination blocking probability, S6, converting maximized photoelectric consumption target under the guidance of the virtual electricity prices, solving a target function, and making charging and discharging plan of electric automobiles in a time length T, S7, various electric automobiles conducting power consumption, idling and discharging operation at the current moment according to the control strategy, updating prediction model information and uploading control information, and S8, repeating S3-S7 until all vehicles departing from the charging facility. The photoelectric consumption level is high, and the control effect is good.

The purpose of this invention is to provide an electrolyte capable of suppressing decomposition of a solvent on he negative pole, suppressing energy reduction, gas and load charcteristic going worse to provide a nonaqueous electrolyte providing excellent load property and low temperature property to the battery, and provide a secondary battery containing the electrolyte and additives for it characterizing in containing unsaturated sultone nonaqueous electrolyte and secondary battery using this electrolyte and its additives composed of same compositions.

The invention discloses a decision method for rolling optimization of wind and light storage cooperative scheduling. The decision method comprises the following implementation steps of: acquiring day-ahead prediction values of load, wind power of wind power farms and output power of photovoltaic power stations and data such as charging demand of each electric automobile recharging station; arranging a day-ahead plan of a next-day charging plan of each electric automobile recharging station, wherein the plan can meet energy demands of electric automobiles of each electric automobile recharging station and reduce the peak valley difference rate of equivalent load curves, so that the peak pitching pressure of the conventional machine sets is reduced, and the energy access level of renewable energy is improved; and continuously modifying the rolling of the charging plan of each electric automobile recharging station in rest time period of a current day in real time through the updated predication data acquired every hour such as the load, the wind power of the wind power farms and the output power of the photovoltaic power stations of the rest time period of the current day in the operation of the current day, so that the problem that an actual equivalent load curve smoothing effect of the current day is weakened by the charging plan of each electric automobile recharging station due to prediction errors is solved as possible.

A non-aqueous electrolyte is provided that includes a non-aqueous solvent and an electrolyte salt, wherein the non-aqueous solvent contains a fluorinated ether (1) represented by the following Formula: HCF₂CF₂CF₂CH₂—O—CF₂CF₂H (1). This non-aqueous electrolyte has good wettability to a polyolefin separator, can provide a battery with excellent load characteristics for a long period, does not easily decompose in the battery under high-temperature storage, and causes little gas generation due to decomposition. Furthermore, a non-aqueous electrolyte secondary battery is provided that includes a positive electrode, a negative electrode, a separator, and the above-described non-aqueous electrolyte.

Provided are an electrolyte having superior adhesion strength to an electrode and superior permeability into the electrode, and a battery using the electrolyte. An electrolyte comprises, for example, a high molecular weight compound and an electrolyte solution prepared by dissolving an electrolyte salt in a solvent, and the electrolyte is formed through applying a coating solution prepared by dissolving the high molecular weight compound in a mixed solvent to at least either a cathode or an anode. The high molecular weight compound includes a first high molecular weight compound with a weight-average molecular weight of 550,000 or more and a second high molecular weight compound with a weight-average molecular weight of 1,000 or more but not exceeding 300,000. Thereby, the adhesion strength of the electrolyte to the electrode, the permeability of the electrolyte into the electrode and the mechanical strength of the electrolyte can be improved, and the capability of holding a solvent can be improved.

The invention discloses a high voltage generation device of a medical high-frequency high voltage generator, which comprises an oil tank, a high voltage main transformer, a small focus filament transformer, a big focus filament transformer, a high voltage rectifying plate connected with the output lead of the high voltage transformer, a high voltage dividing and sampling plate, an external wire holder, a high voltage cable socket and an oil hole cover. A main bracket is arranged in the inner cavity of the oil tank, an upper bracket is arranged at the upper part of the inner cavity; the high voltage main transformer is arranged at the middle part of the main bracket; the small focus filament transformer and the big focus filament transformer are arranged on the upper bracket; an oil hole and a breathing hole are arranged on the upper side of the oil tank; the high voltage rectifying plate is fixed at the lower part of the main bracket; the high voltage dividing and sampling plate is arranged at the outer side of the high voltage rectifying plate and is fixed at the lower part of the main bracket; both the external wire holder and the high voltage cable socket are arranged on the upper side of the oil tank; and the oil hole cover covers the oil hole. The DC high voltage outputted by the high voltage generation device is stable and has small ripple wave and high performance-price ratio.

The purpose of the present invention is to provide a lithium-ion secondary battery with small internal resistance, excellent load characteristics and low reduction in capacitance due to repeated discharge and charge.

The lithium-ion secondary battery of the present invention attaining the above purpose comprises a positive electrode, negative electrode and electrolyte; said positive electrode and negative electrode are configured by binding an active material layer, including an electrode active material and a binder, to a collector; the binder used for at least one of the positive electrode or negative electrode includes polymer particles; and the polymer particles satisfy the following properties:

• • swelling degree in the electrolyte of a sheet-like molded body, obtained by pressure molding of only the polymer particles, is 5 to 50%, and lithium ion conductivity of the sheet-like molded body swollen by the electrolyte is 1×10⁻⁴ S·cm or more.

An electrode material which can improve the mobility of electrons and the mobility of ions at the same time, and, furthermore, does not have a problem of the impairment of the diffusion of lithium ions in a thin layer containing a carbonaceous electron-conductive substance so as to be excellent in terms of load characteristics and energy density, and an electrode and a lithium ion battery are provided.

The electrode material of the invention is produced by forming a thin layer made of a carbonaceous electron-conductive substance on surfaces of primary particles made of an electrode active material, in which the carbonaceous electron-conductive substance contains nitrogen atoms.