Apparatus and method for protecting MOSFET relay using a voltage detector and signal fuse

• Main Authors: CHOI, YANG LIM, LEE, CHANG BOG, SONG, HYEON JIN
• Format: Patent
• Language: English; Korean
• Published: 19.10.2017
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; TESTING; TRANSPORTING; VEHICLES IN GENERAL

본 발명은 차량용 배터리 메인 회로에 구비된 모스펫(MOSFET) 릴레이의 통전 전류값을 검전기(voltage detector)를 통해 검출 전압값을 산출하고, 산출된 전압값이 기 설정된 임계값을 초과하는 경우 시그널 퓨즈(signal fuse)를 동작시킴으로써 모스펫 릴레이로 인가되는 전류를 사전 차단하여 모스펫 릴레이를 소손으로부터 보호할 수 있는 검전기 및 시그널 퓨즈를 이용한 모스펫 릴레이 보호 장치 및 방법에 관한 것이다. The present invention relates to an apparatus and a method for protecting a MOSFET relay by using a voltage detector and a signal fuse, which calculate a detection voltage value through a voltage detector from an electrically conducted current value of a MOSFET relay provided in a battery main circuit for a vehicle and pre-block current applied to the MOSFET relay by operating a signal fuse when the calculated voltage value is more than a predetermined threshold to protect the MOSFET relay from being burned.