PRECHARGER

• Main Authors: KIM, SANG BEOM, CHO, SHIN, CHOI, SANG GYU, KIM, JOO HOON, JANG, SANG HO
• Format: Patent
• Language: English; Korean
• Published: 09.08.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

An embodiment of the present invention relates to a precharger. More specifically, the present invention relates to an electronic precharger which is possible to precise inrush current control and can extend a lifetime of a component. According to an embodiment of the present invention, the precharger comprises: a transformer converting an input power input from a power part into an output power, and converting the output power into a feedback signal; a switch part switching the input power input to the transformer; a charging part charged by the output power; a relay part switching a serial connection of the power part and the charging part; and a control part having a sequence circuit which outputs an off signal when determined that a predetermined charged amount of the charging part is reached based on the input power and the feedback signal, and a DC/DC converter IC which controls the switch part so as to block the input power based on the off signal. 실시예는 프리차져에 관한 것으로, 더욱 상세하게는 전자식 프리차져에 관한 것이다. 실시예에 따른 프리차져는, 전원부로부터 입력된 입력전원을 출력전원으로 변환하고, 출력전원을 피드백 신호로 변환하는 트랜스포머; 상기 트랜스포머에 입력되는 상기 입력전원을 스위칭하는 스위치부; 상기 출력전원에 의해 충전되는 충전부; 상기 전원부와 상기 충전부의 직렬 연결을 스위칭하는 릴레이부; 상기 입력전원과 상기 피드백 신호에 기초하여 기 설정된 충전부의 충전량에 도달한 것으로 판단하면 오프 신호를 출력하는 시퀀스 회로와, 상기 오프 신호에 기초하여 상기 입력전원을 차단하도록 상기 스위치부를 제어하는 DC/DC 컨버터 IC를 구비한 제어부;를 포함할 수 있다.