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.

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.

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 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.

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 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.

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.