Abstract:
PURPOSE: An apparatus and a method for controlling a slip of a motor of an electric vehicle are provided to control the slip of the motor by extracting a correction coefficient from a phase and a slip gain of the motor. CONSTITUTION: An apparatus for controlling a slip of a motor of an electric vehicle includes a battery(10), a BMS(Battery Management System)(20), a CEU(Control Electronics Unit)(30), a SDU(Safety Disconnection Unit)(40), a motor(50), a phase detector(60), and an MCU(Motor Control Unit). The battery(10) is used as a main power source. The BMS(20) is used for providing the monitoring management information such as the temperature, the peripheral temperature, a state of charge, and voltage/current of the battery(10) to a main controller. The CEU(30) is used for controlling all controllers of the electric vehicle. The SDU(40) is used for breaking the supply of the voltage and the current between the battery(10) and the load. The motor(50) is used for generating the driving force. The phase detector(60) is used for detecting a driving angle of the motor(50) and outputting a phase signal according to the driving angle. The MCU is used for controlling a driving operation of the motor. The MCU includes a slip correction unit.
Abstract:
PURPOSE: An engine throttle device for a vehicle is provided to prevent a sudden acceleration caused by malfunction of an ECU(Engine Control Unit) because a rotation state of the throttle valve is controlled with mechanical displacement according to an operation state of an accelerator pedal. CONSTITUTION: An engine throttle device for a vehicle comprises a throttle valve(3), a rotating member(5), rotation-restricting unit(7), an accelerator pedal(9) and a displacement transmission unit(11). The throttle valve is rotated by torque from a motor. The rotating member is connected to a rotary shaft of the throttle valve. The rotation-restricting unit converts the rotating member into a rotatable state or a non-rotatable state by the mechanical displacement. The displacement transmission unit transfers the mechanical displacement of the accelerator pedal to the rotation-restricting unit.
Abstract:
본 발명은 가속 위치 센서에서 출력되는 가속 위치 값으로부터 토크를 구하고, 이 토크에 차속센서로부터의 차속을 곱하여 요구 파워를 연산하여 출력하는 요구 파워 연산부와; 상기 요구 파워 연산부로부터의 요구 파워와 배터리 관리 시스템으로부터의 현재 배터리 충전 상태를 입력받고, 이 입력된 요구 파워와 현재 배터리 충전 상태 및 기설정된 측정치인 기준 파워와 기준 에너지값을 이용하여 목표 배터리 충전 상태를 산출하는 목표 배터리 충전 상태 산출부와; 상기 산출된 목표 배터리 충전 상태와 현재 배터리 충전 상태의 차이에 따라 배터리 충전 제어 운전을 변경하는 충전 제어부를 포함하여 구성된 하이브리드 전기 자동차에서 목표 충전 상태를 이용한 배터리 충전 제어 장치를 제공한다. 하이브리드 전기 자동차, 배터리, 충전 제어, 목표 배터리 충전 상태
Abstract:
A method and an apparatus for charging a battery by using a target SOC(State Of Charge) in a hybrid electric vehicle are provided to drive the vehicle in an expected driving condition by managing the current SOC of the battery considering the expected driving condition. A required power operation unit(30) calculates torque from an acceleration position value outputted from an acceleration position sensor(10) and outputs required power by multiplying the torque by vehicle speed outputted from a vehicle speed sensor(20). A target SOC calculating unit(40) receives the required power from the required power operation unit and the current SOC of the battery from a battery managing system and calculates a target SOC of the battery by using the required power, the current SOC of the battery, a reference power value, and a reference energy value. A charge control unit changes charge control operation of the battery according to the difference between the target SOC and the current SOC of the battery.
Abstract:
An operation point control method of an HEV(Hybrid Electric Vehicle) is provided to improve fuel efficiency by effectively operating the HEV by including control operations for managing the SOC(State Of Charge) of a battery and regulating temperature of a motor and to secure real-time control performance through minimum efficiency operations in selecting an engine operation point. An operation point control method of an HEV comprises the steps of: inputting the position of an accelerator pedal, vehicle speed, the SOC of a battery, engine speed, motor speed, the present gear level, and motor temperature to an HCU(Hydraulic Control Unit)(S101); calculating torque that a driver demands(S102); computing charge and discharge limit values of the battery for protecting the SOC of the battery(S103); calculating the number of effective gear levels and transmission gear ratio(S104); initializing the optimal system efficiency into zero(S105); calculating the speed of an engine and a motor after shifting(S106); calculating demand torque of an output stage of a transmission after shifting(S107); computing a motor available range according to the charge and discharge limit values of the battery(S108); calculating maximum motor torque according to the motor temperature(S109); calculating the final motor available torque range(S110); computing an engine torque range to satisfy the demand torque(S111); calculating the optimal operation point of the engine and computing engine torque at the optimal operation point(S112); comparing the demand torque and engine torque corresponding to the optimal operation point of the engine and differently calculating the process for the output of the optimal operation point as the demand torque is higher or lower than the engine torque(S113,S114); and outputting the optimal engine torque and optimal motor torque.
Abstract:
본 발명은 하이브리드 차량에 적용되는 전력제어시스템에 관한 것이다. 본 발명은 메인배터리, 보조배터리를 관리하며 상기 메인배터리의 SOC(State Of Charge) 값을 모니터링하여 출력하는 BMS(Battery Management System); 상기 메인배터리로부터 공급된 전압을 변환하여 상기 보조배터리를 충전하는 LDC(Low Voltage DC-DC Converter); 및 상기 BMS로부터 입력된 메인배터리의 SOC 값이 사전에 정해진 비상값보다 작다고 판단한 경우, 사전에 정해진 엔진구동시간 동안 엔진을 구동하기 위한 LDC사용금지제어명령을 생성하고, 상기 생성된 LDC사용금지제어명령을 수행함과 동시에 내장된 비휘발성메모리에 저장하는 HCU(Hybrid Control Unit);를 포함하는 것을 특징으로 한다. 이에 의해, 본 발명은 방전된 보조배터리의 교체작업 후, IG ON 시점에 일정시간 엔진을 구동함으로써 HCU가 실제 SOC 값을 인지하지 못해 발생할 수 있는 메인배터리의 손상을 사전에 방지할 수 있다.
Abstract:
병렬형 하이브리드 전기자동차에서 홀 센서의 고장이 발생되는 경우 모터에 직결되는 크랭크 샤프트의 회전 위치 정보를 검출하는 크랭크 샤프트 센서의 신호로부터 홀 센서의 신호를 모사하여 출력하도록 하는 것으로, 모터의 각 상별 회전자 위치를 검출하는 복수개의 홀 센서와, 크랭크 샤프트의 회전 위치를 검출하는 크랭크 샤프트 센서와, MCU로부터 인가되는 전류 제어명령에 따라 모터의 구동 속도 및 토크를 제어하는 각 상별 게이팅 신호를 출력하는 전류제어수단과, 전류제어수단의 게이팅 신호에 따라 직류 전원을 3상 전원으로 변환시켜 모터에 각 상 전압을 인가하며, 피드백 검출되는 홀 센서의 각 상별 회전자 위치 정보에 따라 모터 구동에 대한 게이팅을 수행하는 게이트 드라이버를 포함하며, 홀 센서의 고장시 상기 크랭크 샤프트 센서의 신호를 분석하여 모터의 각 상별 회전자 위치에 대한 전기각을 모사하여 출력하는 엔코더를 더 포함한다. 따라서, 모터 회전자의 각 상별 위치를 검출하는 홀 센서가 고장인지를 판단하여, 홀 센서가 정상적인 상태이면 통상 제어를 수행하고, 홀 센서의 고장이면 크랭크 샤프트 센서의 신호로부터 모터 회전자의 위치를 추출하며, 모터 회전자의 각 위치로부터 현재 위치에서의 상(相)을 검출하여 홀 센서의 신호로 모사 출력한다. 병렬형 하이브리드 전지자동차, 모터 제어, 홀 센서, 회전자 위치
Abstract:
PURPOSE: A motor driving system of a parallel type hybrid electric vehicle and a driving method thereof are provided to improve safety and reliability of the motor by duplicate a hole sensor signal by using a signal of a crank shaft sensor for detecting a position of a crank shaft directly coupled with the motor although a hole sensor gets out of order. CONSTITUTION: A motor driving system drives a motor in a parallel type hybrid electric vehicle which includes a rotating shaft of the motor and a crank shaft of an engine which are directly coupled with each other. The motor driving system includes a plurality of hole sensors(40A,40B,40C), a crank shaft sensor(60), a current controller(70), and an encoder(80). The hole sensors detect rotor positions in accordance with each phase of the motor. The crank shaft sensor detects a rotational position of the crank shaft. The current controller controls a driving speed and a torque of the motor according to a current control signal from an MCU(Motor Control Unit). The encoder applies the phase voltage to the motor according to a gating signal of the current controller and includes a gate driver for performing the gating according to the position information of the rotor of each phase. The encoder analyzes a signal from the crank shaft sensor when the hole sensor malfunctions and outputs a duplicate of the position of each phase of the motor.
Abstract:
PURPOSE: An apparatus and a method for correcting deviation of a brake sensor of a hybrid electric vehicle are provided to detect accurately an angle for driving a brake pedal by setting an electric zero point of a brake pedal sensor to decide the amount of regenerative braking energy. CONSTITUTION: An apparatus for correcting deviation of a brake sensor of a hybrid electric vehicle includes a brake pedal(10), a brake sensor(20), a zero point control portion(30), a control portion(40), and a torque control portion(50). The brake sensor(20) detects the driving angular displacement of a brake pedal. The zero point control portion(30) sets a zero point of the brake sensor(20) by comparing an output signal of the brake sensor(20) to a reference value when the brake pedal is not operated. The control portion(40) decides and controls the amount of regenerative braking energy and the braking torque by detecting and analyzing the driving angular displacement of the brake pedal. The torque control portion(50) controls a braking operation and the amount of regenerative braking energy by controlling the braking torque.