Abstract:
본 발명은 기존의 상용 분말에 비해 높은 비표면적을 가진 나노 크기의 분말을 제조할 수 있는 연료전지용 전해질 분말 제조방법 및 이에 의한 전해질 분말에 관한 것이다. 본 발명의 연료전지용 전해질 분말 제조방법은 상기 세리아 전구체와 희토튜 금속 전구체를 하기 화학식의 몰 비에 대응되는 질량으로 증류수에 용해시키면서 상기 증류수의 총부피를 기준으로 0.002 내지 0.006 부피비로 폴리에틸렌글리콜(PEG)을 첨가하여 전구체 수용액을 제조하는 전구체 수용액 제조단계와, 상기 전구체 수용액에 초음파 처리를 실시하면서 상기 증류수의 총부피를 기준으로 0.2 내지 0.5 부피비로 수산화물을 첨가하여 전해질 수용액을 제조하는 초음파 처리단계와, 상기 전해질 수용액을 전해질 겔로 제조하는 전해질 겔 제조단계 및 상기 전해질 겔을 알코올로 세척하고 건조시켜 전해질 분말을 제조하는 전해질 분말 제조단계를 포함하여 이루어질 수 있다.
X a Ce b O c (여기서 X는 희토류 금속, a=0.01 내지 0.4, b= 1-a, c=2b+3a/2) 고체산화물 연료전지, 전해질 분말, 초음파 처리
Abstract:
PURPOSE: A solid oxide fuel cell is provided to prevent leakage current by injecting a small amount of oxygen or a mixed gas of air and fuel gas and to maximize the performance of the solid oxide fuel cell. CONSTITUTION: A solid oxide fuel cell includes: an anode holding an oxidation catalyst of hydrogen gas and hydrocarbon; a cathode which is independently installed, holds a catalyst for the reduction of oxygen, and in which air is inserted; and a solid oxide electrolyte layer formed between the anode and cathode.
Abstract:
휠체어용 테이블 어셈블리는 지면과 수직한 방향으로 연장되는 몸체, 상기 몸체의 일측에 배치된 모터, 상기 모터에 의해 회전하는 테이블 구동부, 상기 테이블 구동부에 연결된 테이블, 상기 테이블이 상기 지면과 수평하게 위치는 테이블 사용 모드 및 상기 테이블이 지면과 수직으로 휠체어의 일측에 위치하는 테이블 비사용 모드를 서로 전환하기위해 상기 모터의 구동을 제어하는 스위치부, 및 상기 테이블 사용 모드에서 상기 테이블을 접촉하여 지지하고 상면이 곡면인 제1 테이블 지지부를 포함한다. 상기 휠체어용 테이블 어셈블리는 타인의 도움 없이도 사용자인 장애인 스스로 테이블을 작동 시킬 수 있다.
Abstract:
The present invention relates to a battery heating device of an electric vehicle and, more specifically, to a battery heating device of an electric vehicle which heats a battery by using an external charging power charging the battery. The battery heating device of an electric vehicle comprises a battery powering the electric vehicle; a sensor measuring the temperature of the battery; and a passive element converting an electrical energy into a thermal energy to heat the battery. The device additionally comprises a converter or a voltage regulator which supplies an external power to the passive element and controls the supplied power. With this configuration, the efficiency of the battery can be maximally increased by increasing the temperature of the battery in a short time. Moreover, the lifetime of the battery can be extended by reducing the temperature rise time of the battery. And, the battery charging time is shorten to enable quick charge by activating a chemical reaction of the battery by increasing the temperature of the battery.
Abstract:
The present invention relates to a driving speed prediction system and a method thereof. More specifically, the system includes: a data acquisition unit which receives destination data where a vehicle needs to go and the current location data of the vehicle by receiving GPS data; a driving route determination unit which determines a route for the vehicle to drive based on the current location data and the destination data; a traffic data acquisition unit which acquires at least one set of traffic data on the driving route; and a driving speed prediction unit which predicts the driving speed of the vehicle within the driving route using a preset period based on the acquired traffic data set. By doing so, the driving speed prediction system and the method thereof, when the driver of a vehicle inputs the final destination, checks the expected driving route and predicts the driving speed of the vehicle depending on traffic conditions, road conditions, and the driving pattern of the driver, thereby improving the fuel efficiency of the vehicle. [Reference numerals] (120) Data acquisition unit; (140) Driving route determination unit; (160) Traffic data acquisition unit; (180) Driving speed prediction unit; (AA) GPS data; (BB) Destination data; (CC) Traffic data
Abstract:
PURPOSE: A preparing method of a functional layer-comprising ceria-based electrolyte is provided to minimize resistance loss by depositing an YSZ film with relatively high resistance to oxygen ions into a thin thickness, and to facilitate the thickness control of the functional layer. CONSTITUTION: A preparing method of a functional layer-comprising ceria-based electrolyte comprises a step of forming an YSZ functional layer through an atomic layer deposition. The functional layer formation step consists of repeating 1-30 times of an yttria formation cycle and a zirconia formation cycle. The yttria formation cycle comprises: a step of supplying an yttria precursor into a chamber; a step of purging the chamber; a step of supplying the oxidant into a chamber; and a step of purging the inside of chamber. The zirconia formation cycle comprises: a step of supplying one kind of zirconia precursors into the chamber; a step of purging the chamber; and a step of supplying oxidant into the chamber; and a step of purging the inside of the chamber.
Abstract:
본 발명은 맥동 유동을 이용한 고분자 전해질막 연료 전지의 가습장치 및 시스템에 관한 것으로서, 보다 상세하게는, 연료 전지의 연료 및 공기를 주입하는 주입구에 물을 저장할 수 있는 수단을 구비하여 연료 전지 내에서 생성되어 맥동 유동을 통하여 배출된 물을 저장한 다음, 이것을 연료 전지에 새로 공급될 연료 및 공기에 공급하도록 하는 맥동 유동을 이용한 고분자 전해질막 연료 전지의 가습장치 및 시스템에 관한 것이다.
Abstract:
PURPOSE: A fuel cell stack is provided to suppress a flooding phenomenon generated form a fuel cell and to increase relative humidity of reaction gas flowing using an internal membrane humidifier installed inside the fuel cell stack. CONSTITUTION: A fuel cell stack(100) has plural laminated unit cells consisting of a membrane electrode assembly(11) and a separators arranged at both sides of the membrane electrode assembly. A flow channel(17') supplying a flow path of reaction gas to at least one separator(15') of two separators located at the outermost of the fuel cell stack. An inside membrane humidifier(50) which is arranged at the separator and humidifies reaction gas provided through provided to the fuel cell stack.
Abstract:
PURPOSE: A humidifier of a polymer electrolyte fuel cell, and a system thereof are provided to supply water generated in the inside of the fuel cell into air and fuel again, and to operate the discharge of the water and the humidification of the air and the fuel at the same time. CONSTITUTION: A humidifier of a polymer electrolyte fuel cell(10) comprises the following: a pulsation unit(110) applying a pulse flow to fuel inserted to the fuel cell; and a humidifying unit(120) including a porous permeable membrane to pass through the fuel inserted into the fuel cell while being installed in between the fuel cell and the pulsation unit. The humidifying unit absorbs water discharged from the fuel cell by the pulse flow, passes through the fuel, and supplies the absorbed water to the fuel.
Abstract:
PURPOSE: A water and fuel management system for a polymer electrolyte membrane fuel cell is provided to reduce an unnecessary loss of fuel and an oxidizer, and to improve the efficiency of the fuel cell. CONSTITUTION: A water and fuel management system for a polymer electrolyte membrane fuel cell using a dead-end mode comprises the following: a fuel cell system(1) including an anode(11) for supplying fuel, and a cathode(12) for supplying an oxidizer around a polymer electrolyte membrane(13); a pulsating inductor(40) inducing the pulsating with a constant cycle and amplitude on the cathode while being connected with a discharging path(38b); a voltage measurement unit(16) measuring the voltage generated from the fuel cell; and a controller(17) controlling the cycle and the amplitude from the pulsating inductor.