36results about How to "Improved power output characteristics" patented technology

A battery pack includes at least one battery module comprising a plurality of unit cells stacked together; and at least one thermoelectric module on the at least one battery module, wherein the thermoelectric module may include a Peltier device having an input terminal configured to receive a polarity-convertible current.

The permanent magnet brushless motor permits dynamic change of output characteristics by varying the positional relationships of rotor components, with respect to each other and with respect to the stator, to progressively effect field weakening with increasing speeds. The force required to impart the limited range of motion involved is transmitted to the rotor component by way of bearings and / or an actuation motor, and a helical guide path is used to great advantage for constraining such movement. The wide, dynamically adjustable motor output range of the motor effectively provides the equivalent of an efficient, continuously variable transmission. High torque at low speeds, and efficient, constant power output over a wide high speed range, uniquely adapt the motor for use as the prime mover for electric / hybrid vehicles.

The invention discloses a day-ahead optimal scheduling method for a wind-solar storage integrated power generation system. The method comprises the following steps: acquiring various optimization data and determining the optimization space of the wind-solar storage integrated power generation system; building an optimization model taking the maximum total active power as the target according to the grid model of a practical power grid; adding the punishment quantity of the total active power output curve variation relationship to the optimization target to obtain the optimal scheduling model putting smooth power generation curve into consideration; linearizing the nonlinear factors in the model, obtaining the active power generation curve of the wind-solar storage integrated power generation system through solving by the dual simplex method, submitting the active power generation curve to a superior scheduling center; and acquiring the charge-discharge plan of an energy storage device and issuing the plan to subsystems for execution. By adopting the method provided by the invention, the power resource optimal configuration capability is greatly improved.

The invention provides a method for preparing a multilevel pore carbon electrode material of a super capacitor, comprising the following steps: (1) preparing the mixing solution of ethyl alcohol and water, adding a surfactant and a phenol compound into the mixture, stirring until the mixture is dissolved, adding concentrated hydrochloric acid into the solution, stirring until the solution is pink, then adding methanal, stirring to generate solid phenolic resin at the bottom of the solution, aging the phenolic resin in the solution, taking out, and then aging at 100 DEG C; (2) carbonizing aged phenolic resin under the protection of nitrogen at 850 DEG C to obtain a mesoporous carbon material; (3) smashing the mesoporous carbon material to less than 50 meshes, and then activating by an activating agent under the protection of nitrogen; and (4) washing the activated product by deionized water and drying to obtain the microporous-mesoporus multilevel pore carbon electrode material. In the invention, mesoporus carbon with even pore size distribution is prepared firstly, and then micropores are produced on the pore wall of the mesoporus carbon in the activation process to obtain the multilevel pore carbon electrode material with directly communicated mircropores and mesopores.

The invention provides a modified lithium nickel cobalt manganese cathode material and a production method thereof. A general formula of the modified lithium nickel cobalt manganese cathode material is LiaNixCoyMnzMgammaO2-deltaRdelta; wherein a is greater than or equal to 1.03 and less than or equal to 1.23; x is greater than 0 and less than or equal to 0.9; y is greater than 0 and less than or equal to 1; z is greater than 0 and less than or equal to 1; the sum of x, y and z is 1; gamma is greater than 0 and less than or equal to 0.075; and delta is greater than 1 and less than or equal to 0.05; the doped element M is selected from one or more of Ni, Co, Mn, Sn, Mg, Ca, Ti, Zr, V, Nb, Mo, W, Al, and B, the doped element R is selected from one or more of N, P, S, Si, and Se, and the dopedM and the doped element R are positioned at the grain boundary. In the invention, grain-boundary doping is carried out on a conventional lithium nickel cobalt manganese cathode material, and the obtained modified lithium nickel cobalt manganese cathode material still has a stable structure during a repeated charge and discharge process of intense current.

Provided is a lithium secondary battery which has excellent low-temperature power output characteristics by the inclusion of a given amount of a lithium metal oxide and / or a lithium metal sulfide in an anode mix for a lithium secondary battery containing a carbon-based anode active material and is thereby capable of being used as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) that must provide high-power output at low temperatures as well as at room temperature.

A semiconductor laser device includes a first semiconductor laser element for emitting a first laser light having a first oscillation wavelength of λ1 and a second semiconductor laser element for emitting a second laser light having a second oscillation wavelength of λ2 (wherein λ2≧λ1), which are formed on a single substrate. A first dielectric film which has a refractive index of n1 with respect to a wavelength λ between the first oscillation wavelength λ1 and the second oscillation wavelength λ2 and has a film thickness of approximately λ / (8n1) is formed at light emitting facets in the first semiconductor laser element and the second semiconductor laser element, from which the laser lights are emitted, and a second dielectric film having a refractive index of n2 and a film thickness of λ / (8n2) are formed on the first dielectric film.

Disclosed is a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material layer and the negative electrode includes a negative electrode active material layer. The positive electrode active material layer includes a lithium-containing metal oxide containing nickel as a positive electrode active material. The area of the positive electrode active material layer per unit battery capacity is in a range of 190 to 800 cm2 / Ah. A porous heat resistant layer is disposed between the positive electrode and the negative electrode, and the ratio of an amount of the non-aqueous electrolyte relative to an area of the porous heat resistance layer is 70 to 150 ml / m2.

An ECU calculates an actual relative rotational angle in a VVT based on a crank angle signal sent from a crank position sensor and a cam angle signal sent from a cam position sensor. Furthermore, the ECU calculates a fundamental target relative rotational angle based on engine operating conditions. The fundamental target relative rotational angle is corrected by a factor responsive to the change of the air-fuel ratio. Thus, a control rotational angle fed to the VVT varies in accordance with the change of the air-fuel ratio so as to stabilize the combustion and improve the power output characteristics.

The invention relates to a wind power plant coordination control method and system capable of preventing large-scale wind power frequent ride-through. The control method comprises the following steps: I, carrying out low-voltage ride-through state judgment based on wind power grid-connected point voltage amplitude and voltage change ratio; II, carrying out coordinated operation control in the low-voltage ride-through failure period of a wind power grid-connected system; III, carrying out coordinated operation control after low-voltage ride-through failures of the wind power grid-connected system are cleaned; and IV, carrying out steady-state operation control for the wind power grid-connected system. The judging ability of a wind generation set for short-circuit faults is strengthened, the power output characteristics of the wind generation set in the low-voltage ride-through process are optimized, and the coordinated control behaviors for the wind generation set and dynamic reactive power compensation equipment are added, so that frequent low-voltage ride-through of a wind power plant can be effectively avoided.

The electrode for the nonaqueous electrolyte secondary battery includes a current collector and an active material layer formed on the current collector and containing an active material. The active material contains first and second particulate lithium-containing transition metal oxides of different voidages.

The invention discloses an active coordination and control method for a new energy combined power generation system containing an energy storage system. The method comprises the steps of (1) acquiring real-time data from a supervisory control and data acquisition (SCADA) system and updating the information of an AGC model; (2) calculating the control goal of a combined power generation system in the currently control scenario according to the control scenario in which the combined power generation system currently participates the AGC process; (3) calculating the currently maximum admissible new energy generating margin of an energy storage system; (4) according to the ultra-short-term power predicted value of the new energy and the currently maximum admissible new energy generating margin of the energy storage system, decomposing the overall control goal of the combined power generation system that is obtained through the calculation process during the step (2), and respectively calculating the control goal of a new energy generating system and the control goal of the energy storage system; (5) verifying and checking instructions for each control object obtained through the calculation process during the step (4), and issuing final control instructions after ensuring the instructions are error-free. According to the technical scheme of the invention, the energy storage system is effectively utilized to quickly absorb and release the electric energy, so that the control object can be quickly and accurately tracked.

The invention discloses a method for manufacturing a microwave power device by using a double level polysilicon device structure. The method of the invention adopts a deep groove isolation technique and inhomogeneous thermal design, realizes the acinaceous cellular structure, adopts outer base region composite plate to carry out photoetching, vertically etches a monox dielectric layer and outer base polycrystalline silicon to obtain the outer base region window of the ratio change of the length and the like, and forms a compound L-shaped side wall capable of adjusting the length of an emitting electrode by means of autocollimation in the outer base region window. In the invention, the emitting electrode polycrystalline silicon composite plate is adopted to carry out photoetching, the emitting electrode polycrystalline silicon and the dielectric layer are vertically etched by utilizing autocollimation, the selective side wall protection technology is combined, under the scale of the deep submicron, and the polycrystalline silicon refractory metallic silicide with low film resistivity is realized by means of autocollimation, thereby avoiding the short circuit connection of two types of polycrystalline silicon leads, reducing the restriction of parasitic components of the interconnected leads on improving the characters of the microwave power device under the graph scale of submicron and deep submicron, thereby improving the overall performance of the microwave power device and the microwave performance thereof.

A fuel cell catalyst which has high power output characteristics and suppresses degradation of power generation performance due to starting, stopping or load variation; a manufacturing method thereof; a membrane electrode assembly for fuel cell; and a fuel cell including the same. The fuel cell catalyst includes at least catalytically active species and a carrier supporting the catalytically active species. The catalytically active species are at least one selected from the group consisting of platinum, a platinum alloy, and a core-shell catalyst in which a core of a metal different from platinum is coated with a shell containing platinum, the carrier is a carbon material, and at least one of the catalytically active species and the carrier contain(s) fluorine atoms.

Disclosed in the invention is a dual-stator rotating motor comprising a rotating shaft, an inner side stator iron core, an outer side station iron core, and a permanent-magnet rotor arranged between the inner side stator iron core and the outer side station iron core. The permanent-magnet rotor is formed by permanent-magnet magnetic steels and non-magnetic-conductive parts. An inner side magnetic-field modulation ring is arranged between the permanent-magnet rotor and the inner side stator iron core; an outer side magnetic-field modulation ring is arranged between the permanent-magnet rotor and the outer side station iron core; and the inner side magnetic-field modulation ring and the outer side magnetic-field modulation ring are formed by magnetic-conductive parts and non-magnetic-conductive parts. The inner side magnetic-field modulation ring, the permanent-magnet rotor, and the outer side magnetic-field modulation ring can rotate relatively. According to the invention, a problem of difficult adjustment of the magnetic field of the traditional permanent-magnet motor can be solved by adjusting relative positions of the inner side magnetic-field modulation ring, the outer side magnetic-field modulation ring, and the permanent-magnet rotor. Requirements of low speed and large torque can be met; the running range of the high rotation speed of the motor is enlarged; and the power output characteristic of the full-speed range is enhanced.

The invention discloses a reactance matching type and distributed type fused ultra-wideband power chip circuit. The respective advantages of a reactance matching type circuit matching structure and adistributed type circuit matching structure are fused; a reactance matching type structure is adopted in a radio frequency power output stage of the ultra-wideband power amplifier circuit, so impedance matching can be easily and accurately output to improve the efficiency; and the power driving stage adopts a distributed structure, so the circuit bandwidth is easy to expand and the gain flatness is easy to improve. The advantages of the two circuit structures are fused, and the performance of the millimeter-wave ultra-wideband high-power monolithic integrated power amplifier can be greatly improved.

The invention discloses a multi-mode eight-frequency high-efficiency high-gain power amplifier which comprises a multi-mode eight-frequency input matching network, a three-stack self-bias power amplification network and a multi-mode eight-frequency output matching network which are connected in sequence. The grid power supply bias network and the drain power supply bias network are respectively connected with the multimode eight-frequency input matching network and the multimode eight-frequency output matching network. The power amplifier has the beneficial effects that a three-stack transistor structure based on a self-bias structure is adopted, and a multimode LC matching network is combined, so that the power amplifier has multimode characteristics of high efficiency, high gain and highpower output capability at eight frequency points.

The invention relates to a method for preparing a micropore carbon electrode material of a super capacitor. The method mainly comprises the following steps: (1) soaking an activated zeolite molecular sieve in furfuryl alcohol in vacuum, filtering, and washing with toluene, airing at the room temperature, and placing for 24 hours at the temperature of 80 DEG C, and for 8 hours at the temperature of 150 DEG C under the protection of N2 to obtain a molecular sieve / poly-furfuralcohol compound; (2) under the protection of N2, carbonizing the molecular sieve / poly-furfuralcohol compound by heating; when the temperature rises to a set temperature, switching a N2 flow to precipitation gas immediately; performing vapor deposition for several hours to obtain a molecular sieve / micropore carbon compound; and (3) washing the molecular sieve / micropore carbon compound twice by using HF acid and concentrated hydrochloric acid respectively, then washing by using deionized water and drying to obtain micropore carbon electrode material. The micropore carbon material prepared by the invention has large specific surface area; a pore structure is an anti-structure of the molecular sieve; and good communication is formed among pore canals. The micropore carbon material has higher specific capacitance value and better power output characteristics.

The invention discloses a method for manufacturing a microwave power device by using a double level polysilicon device structure. The method of the invention adopts a deep groove isolation technique and inhomogeneous thermal design, realizes the acinaceous cellular structure, adopts outer base region composite plate to carry out photoetching, vertically etches a monox dielectric layer and outer base polycrystalline silicon to obtain the outer base region window of the ratio change of the length and the like, and forms a compound L-shaped side wall capable of adjusting the length of an emitting electrode by means of autocollimation in the outer base region window. In the invention, the emitting electrode polycrystalline silicon composite plate is adopted to carry out photoetching, the emitting electrode polycrystalline silicon and the dielectric layer are vertically etched by utilizing autocollimation, the selective side wall protection technology is combined, under the scale of the deep submicron, and the polycrystalline silicon refractory metallic silicide with low film resistivity is realized by means of autocollimation, thereby avoiding the short circuit connection of two typesof polycrystalline silicon leads, reducing the restriction of parasitic components of the interconnected leads on improving the characters of the microwave power device under the graph scale of submicron and deep submicron, thereby improving the overall performance of the microwave power device and the microwave performance thereof.

By means of the process of components adjustment, microwave smelting, heat treatment and ball milling of a magnesium-based hydrogen storing alloy, the crystalline structure of the alloy is made to change, and an obtained finished product has the characteristic that the sum of the component ratios of an AB2 structure and an A5B19 structure is 40% or above. In order to make the magnesium-based hydrogen storing alloy have larger discharging capacity and hydrogen storing capacity than existing products, the heat treatment process of two times of quenching and two times of tempering is adopted, anda good comprehensive performance effect is acquired. According to the ball milling process, large and small balls are adopted for perform ball milling on the smashed alloy twice in sequence, along with uniform micronization of the magnesium-based hydrogen storing alloy, the surface area is made increased, when the magnesium-based hydrogen storing alloy is applied to a nickel-hydrogen storage battery, the electric power output characteristic of the magnesium-based hydrogen storing alloy is obviously improved, and especially, the hydrogen absorbing / releasing capacity retention rate and the cycle service life of a product are further improved.

The invention discloses a power lithium ion battery, which comprises: an accommodating part, wherein a first cavity and a second cavity which do not interfere with each other are formed in the accommodating part; a first pole group accommodated in the first cavity and comprising two power type battery cores which are connected in series; and a second pole group accommodated in the second cavity, wherein the second pole group is connected with the first pole group in parallel, and the second pole group comprises an energy type battery core. Through the design of the first pole group and the second pole group, the power lithium ion battery independently works in a relatively closed interval, so that the power lithium ion battery has high energy density and high rate performance.

The invention relates to a method for preparing a micropore carbon electrode material of a super capacitor. The method mainly comprises the following steps: (1) soaking an activated zeolite molecular sieve in furfuryl alcohol in vacuum, filtering, and washing with toluene, airing at the room temperature, and placing for 24 hours at the temperature of 80 DEG C, and for 8 hours at the temperature of 150 DEG C under the protection of N2 to obtain a molecular sieve / poly-furfuralcohol compound; (2) under the protection of N2, carbonizing the molecular sieve / poly-furfuralcohol compound by heating; when the temperature rises to a set temperature, switching a N2 flow to precipitation gas immediately; performing vapor deposition for several hours to obtain a molecular sieve / micropore carbon compound; and (3) washing the molecular sieve / micropore carbon compound twice by using HF acid and concentrated hydrochloric acid respectively, then washing by using deionized water and drying to obtain micropore carbon electrode material. The micropore carbon material prepared by the invention has large specific surface area; a pore structure is an anti-structure of the molecular sieve; and good communication is formed among pore canals. The micropore carbon material has higher specific capacitance value and better power output characteristics.

The invention discloses an active coordination and control method for a new energy combined power generation system containing an energy storage system. The method comprises the steps of (1) acquiring real-time data from a supervisory control and data acquisition (SCADA) system and updating the information of an AGC model; (2) calculating the control goal of a combined power generation system in the currently control scenario according to the control scenario in which the combined power generation system currently participates the AGC process; (3) calculating the currently maximum admissible new energy generating margin of an energy storage system; (4) according to the ultra-short-term power predicted value of the new energy and the currently maximum admissible new energy generating margin of the energy storage system, decomposing the overall control goal of the combined power generation system that is obtained through the calculation process during the step (2), and respectively calculating the control goal of a new energy generating system and the control goal of the energy storage system; (5) verifying and checking instructions for each control object obtained through the calculation process during the step (4), and issuing final control instructions after ensuring the instructions are error-free. According to the technical scheme of the invention, the energy storage system is effectively utilized to quickly absorb and release the electric energy, so that the control object can be quickly and accurately tracked.

A positive active material for a rechargeable lithium battery includes a nickel-based lithium metal oxide having a layered crystal structure, and a coating layer including a lithium-metal oxide disposed selectively disposed on (003) crystalline plane of the nickel-based lithium metal oxide, wherein the positive active material includes at least one secondary particle including an agglomerate of two or more primary particles.

The invention discloses a composite flow inhibitor for a lithium-based thermal battery electrolyte, an electrolyte diaphragm material, a lithium-based thermal battery and a preparation method thereof,and belongs to the technical field of thermal battery materials. The composite flow inhibitor for the lithium-based thermal battery electrolyte comprises magnesium oxide and magnesium fluoride, and the mass ratio of magnesium oxide and magnesium fluoride is (2-5):1. The magnesium fluoride in the composite flow inhibitor has an inhibiting effect comparable with that of magnesium oxide on the flowing electrolyte. In addition, the magnesium fluoride also has good thermal stability, good compatibility with electrode materials such as iron disulfide and lithium-silicon alloy and no chemical reaction with the electrode materials. The adoption of magnesium fluoride as a modification material of the flow inhibitor can improve the wetting adsorption behavior of the interface of the molten salt electrolyte and the inhibitor, and accelerates the conduction speed of ions in the electrolyte sheet, thereby improving the ionic conductivity of the electrolyte sheet, and thus improving the power output characteristic of the thermal battery.

A day-ahead optimization scheduling method for a wind-solar storage cogeneration system comprises the steps of: obtaining various optimization data, and determining an optimization space of a wind-solar storage cogeneration system; establishing an optimization model using the maximum active total power as a target according to a power grid model of an actual power grid; adding the penalty quantity of the change relationship of a total active power curve into an optimization target, so as to obtain an optimization scheduling model in which it is taken into account that the power generation curve is smooth; and linearizing a non-linear factor in the model, and solving same using a dual simplex method to obtain an active power generation curve of the wind-solar storage cogeneration system, reporting same to an upper-level scheduling centre, obtaining a charge and discharge plan of an energy storage device, and issuing same to a subsystem for execution. The method greatly improves the optimization configuration capability of electric power resources.

Provided is a lithium secondary battery which has excellent low-temperature power output characteristics by the inclusion of a given amount of a lithium metal oxide and / or a lithium metal sulfide in an anode mix for a lithium secondary battery containing a carbon-based anode active material and is thereby capable of being used as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) that must provide high-power output at low temperatures as well as at room temperature.

A battery pouch that is formed to accommodate an electrode assembly, comprising: a first member layer; and a second member layer that is located between the first member layer and the electrode assembly, and contains an elastomer and protrudes toward the electrode assembly at a plurality of locations to be brought into discontinuous contact with the electrode assembly, wherein the second member layer has spaces open to the electrode assembly between the protruding portions. Accordingly, the power output characteristics of the battery can be improved and the damage to the damage to the sealing portion can be prevented.