摘要:
A lithium rechargeable battery includes a cathode plate having a cathode current collector layer; and a cathode layer composed of particles of a cathode active material; an anode plate that is spaced apart from the cathode plate and having an anode current collector layer and an anode layer composed a mixed anode active material that is a mixture including particles of a spinel lithium titanium oxide (Li4Ti5O12) and nanotubes of a lithium titanium oxide (LixTiO2, where 0
摘要翻译:锂可充电电池包括具有阴极集电器层的阴极板; 以及由正极活性物质的粒子构成的阴极层; 阳极板与阴极板间隔开并具有阳极集电器层和阳极层,阳极层由混合阳极活性材料构成,该混合阳极活性材料是包含尖晶石锂钛氧化物(Li 4 Ti 5 O 12)的颗粒和锂二氧化钛的纳米管的混合物 (LixTiO 2,其中0
摘要:
Provided are a method for forming a cathode active material powder for a lithium secondary cell, and a cathode active material powder prepared using the method. According to the method, a coating layer consisting of a combination of a water-soluble polymer and a metal oxide may be formed on the particle surface of the cathode active material, thereby forming a uniform thickness of the coating layer. Thus, the elution of manganese may be prevented, thereby improving the capacity of the cathode active material and providing excellent cycle characteristics.
摘要:
Provided is a method of designing an electrolyte composition including a nonaqueous organic solvent mixture and a lithium salt to obtain an optimal composition ratio of components of the electrolyte composition for a high charging/high-output discharging secondary battery. The method includes: selecting components of the nonaqueous organic solvent mixture; determining composition ratio ranges of the selected components satisfying such conditions that an average dielectric constant, an average viscosity, and an average boiling point satisfy predetermined boundary values; dividing the ranges of the composition ratios into a plurality of groups; selecting a representative composition ratio of each of the groups; adding a lithium salt to a nonaqueous organic solvent mixture having the representative composition ratio to prepare an electrolyte composition; and measuring properties of the electrolyte composition to determine a composition ratio of an electrolyte composition having predetermined properties.
摘要:
A motor control device including a preprocessing portion calculating a counter electromotive force using an analog operation is provided. The motor control device may include an offset compensation portion and a counter electromotive force measuring portion. The offset compensation portion receives a three-phase current signal from the motor and compensates an offset of the three-phase current signal. The counter electromotive force measuring portion receives the compensated current signal and a three-phase voltage signal from the motor and calculates the received current signal and the received voltage signal using an analog operation to provide the calculated result.
摘要:
Provided are a semiconductor device and a method of fabricating the same. The method includes: forming a trench in a semiconductor substrate of a first conductive type; forming a trench dopant containing layer including a dopant of a second conductive type on a sidewall and a bottom surface of the trench; forming a doping region by diffusing the dopant in the trench dopant containing layer into the semiconductor substrate; and removing the trench dopant containing layer.
摘要:
Provided are a semiconductor device and a method of fabricating the same. The method includes: forming a trench in a semiconductor substrate of a first conductive type; forming a trench dopant containing layer including a dopant of a second conductive type on a sidewall and a bottom surface of the trench; forming a doping region by diffusing the dopant in the trench dopant containing layer into the semiconductor substrate; and removing the trench dopant containing layer.
摘要:
Disclosed is a triangular wave generator which includes a square wave signal generating unit configured to output a first signal transitioning to a high level from a low level via an output terminal in response to a first transition of a clock signal and to transition the first signal to a low level from a high level in response to a reset signal; a resistance unit configured to adjust a voltage level of a the square wave signal; and a capacitance unit configured to receive an output signal of the resistance unit to generate a second signal rising to a high level from a low level with a slope, to provide the reset signal to the square wave signal generating unit, and to output a triangular signal by falling the second signal to a low level from a high level with a slope.
摘要:
Disclosed is a power supply module for a hall sensorless BLDC motor, including: a high-voltage/large-current power device t applied with high voltage/large current and including a plurality of power devices driving the hall sensorless brushless direct current (BLDC) motor; a motor driving circuit sensing and controlling a positional signal or a velocity signal of the hall sensorless BLDC motor and generating a PWM control signal for controlling the hall sensorless BLDC motor; and a power device driving circuit driving the high-voltage/large-current power device according to the PWM control signal of the motor driving circuit, wherein the high-voltage/large-current power device, the power device driving circuit, and the motor driving circuit are CMOS-integrated on the same substrate.
摘要:
Disclosed is a triangular wave generator which includes a square wave signal generating unit configured to output a first signal transitioning to a high level from a low level via an output terminal in response to a first transition of a clock signal and to transition the first signal to a low level from a high level in response to a reset signal; a resistance unit configured to adjust a voltage level of a the square wave signal; and a capacitance unit configured to receive an output signal of the resistance unit to generate a second signal rising to a high level from a low level with a slope, to provide the reset signal to the square wave signal generating unit, and to output a triangular signal by falling the second signal to a low level from a high level with a slope.
摘要:
A motor control device including a preprocessing portion calculating a counter electromotive force using an analog operation is provided. The motor control device may include an offset compensation portion and a counter electromotive force measuring portion. The offset compensation portion receives a three-phase current signal from the motor and compensates an offset of the three-phase current signal. The counter electromotive force measuring portion receives the compensated current signal and a three-phase voltage signal from the motor and calculates the received current signal and the received voltage signal using an analog operation to provide the calculated result.