Abstract:
PURPOSE: A battery voltage sensing device for a hybrid vehicle is provided to maintain contact force which is stronger than contact force of a spring due to increasing contact area from point contact to line contact. CONSTITUTION: A battery voltage sensing device for a hybrid vehicle comprises a cell lead tab(15) which is attached to a side of a cell module(14) and a receptacle(16) whose top end is inserted into a cell lead tab in order to measure the voltage of a battery. The top end of the receptacle is formed in a widening structure so that the both sides of the receptacle easliy contacts with the cell lead tab.
Abstract:
PURPOSE: A duct structure for an integration package module of a hybrid vehicle is provided to reduce a weight and cost of the vehicle by minimizing a length of an inflow duct by forming an L-shaped cooling flow path. CONSTITUTION: A duct structure for an integration package module(2) of a hybrid vehicle comprises a first inlet and a second inlet. The first inlet is formed in an upper side adjacent to the integration package module of a package tray(1a). Cold air flows into the first inlet. The second inlet is formed in a front lower part rear surface of a rear package tray. The cold air flows into the second inlet. The second inlet is connected to one end of an inlet duct(3). The other end of the inlet duct is connected to a case(2a) of the integration package module.
Abstract:
Disclosed are a device and a method for balancing a battery voltage. The device for balancing a battery voltage comprises: multiple first capacitors which are respectively connected, in parallel, to multiple batteries that are connected in series; a discharging unit which is connected to the first capacitors through a switching apparatus and is selectively connected, in parallel, to each of the first capacitors; a measuring unit including a second capacitor which is connected to the discharging unit in parallel, and a voltage measuring circuit which is connected to the second capacitor in parallel; and a control unit to control the switching apparatus at the same time opening a connection switch so that the second capacitor can be selectively connected to the first capacitors, measure a voltage of the second capacitor through the voltage measuring circuit, and control the switching apparatus at the same time of closing the connection switch and separating the voltage measuring circuit in a voltage imbalance so that the battery having a relatively high voltage can be connected to consumption resistance to balance the voltage.
Abstract:
PURPOSE: An apparatus for preventing the overcharging of a battery is provided to block harmful gas by minimizing the swelling of a battery cell even through a swelling phenomenon is generated due to the overcharge of the battery. CONSTITUTION: A battery module(10) includes a plurality of battery cells. A battery control unit(30) is connected to one side of the battery module and includes a voltage sensor. A mounting frame(20) is composed of conductors and is separated from the battery module. A ground part(40) is connected to one side of the mounting frame and grounds the mounting frame. A battery control unit determines the overcharging when a voltage sensor senses a voltage with a low state. [Reference numerals] (10) Battery module; (30) Battery control unit
Abstract:
PURPOSE: A current measuring apparatus of the battery system of a car is provided to measure the current of a high voltage battery system at a hybrid [hybrid] / fuel cell vehicle by using a shunt resistor. CONSTITUTION: A current is outputted from a high voltage battery system. A shunt resistor(110) generates the voltage in proportion to the current. The shunt resistor senses the current of the high voltage battery system. A battery controller(120) detects the sensed current from the shunt resistor. The battery controller comprises a semiconductor switch device(121), a transformer(122), and a central processing unit(127). The semiconductor switch device turns on/off the output voltage of the shunt resistor. The transformer transfers the output voltage of the shunt resistor to a secondary side.
Abstract:
A battery voltage measuring circuit is provided to decrease the manufacturing cost of a BMS(Battery Management System) by using a single CPU(Central Processing Unit) for controlling plural photomos relays. A battery controller for a hybrid vehicle or an electric vehicle includes a high voltage battery(40), a voltage measuring circuit(50), and an ADC(Analog Digital Converter)(60). The voltage measuring circuit independently utilizes the power of an insulated power supply(70) to measure a voltage of the high voltage battery. The power supply supplies a voltage from a differential amplifier to positive and negative terminals, when a photomos relay is connected in forward and reverse directions, respectively. The photomos relay is included in the voltage measuring circuit. The photomos relays are insulated from each other.
Abstract:
병렬형 하이브리드 전기자동차에서 모터에 의한 엔진 시동후 크랭킹 완료라 판단되는 시점에서 모터 속도 지령모드에서 모터 및 엔진의 토크 지령모드로 전환하고, 일정시간 동안 모터의 구동 유지를 통해 배터리의 충전시간을 유지시켜 SOC가 항시 최적의 상태가 유지되도록 하며, 크랭킹 완료로 판단되는 시점에서 부토크의 양을 낮은 기울기로 감소 제어하여 안정된 승차감을 제공하도록 하는 것으로, 스타트 키에 의한 엔진 시동요구가 검출되면 모터에 의한 시동 조건을 만족하는지 판단하는 과정, 모터에 의한 시동 조건을 만족하면 엔진의 목표 아이들 RPM으로 모터의 속도 지령모드를 설정한 다음 모터를 정토크로 제어하는 과정, 정토크로 제어되는 모터의 속도가 상기 설정된 엔진의 목표 아이들 RPM을 추종하여 일정시간 유지되면 엔진에 연료 분사 및 점화를 통해 엔진의 시동을 시도하며, 점화 시점에서 모터를 부토크로 제어하여 모터 속도의 급격한 상승 방지 및 배터리 충전을 수행하는 과정, 엔진 시동 시도에 따라 모터 속도가 설정된 엔진의 목표 아이들 RPM을 추종하게 되면 크랭킹 완료 및 엔진의 아이들 RPM 유지로 판단하면 모터 속도 지령모드에서 엔진 및 모터의 토크 지령모드로 전환하며, 부하의 크기에 비례하는 크기로 부토크를 감소 제어하여 배터리의 충전을 유지하는 과정, 상기한 부토크의 제어에 의해 배터리의 SOC가 모터의 동력 보조 및 시동이 가능한 레벨로 충전되었는지를 판단하는 과정, 배터리의 SOC가 설정된 레벨 이상의 충전이 검출되면 부토크의 해제와 동시에 부하의 크기에 비례하는 모터의 토크 제어를 통해 토크의 합 이 부하의 크기와 동일하게 유지시켜 엔진의 목표 아이들 RPM을 유지 제어하는 과정을 포함하는 것을 특징으로 한다. 병렬형 하이브리드 전기자동차, 엔진 시동, 모터 시동, 부토크 제어