[특허]Battery protection circuit

[미국특허] Battery protection circuit 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-010/44
출원번호	US-0118633 (1993-09-10)
우선권정보	JP-0274946 (1992-09-17); JP-0274947 (1992-09-17)
발명자 / 주소	Eguchi Yasuhito (Kanagawa JPX) Okada Hitoshi (Chiba JPX) Murano Kanji (Tokyo JPX) Sanpei Akira (Fukushima JPX)
출원인 / 주소	Sony Corporation (Tokyo JPX 03)
인용정보	피인용 횟수 : 68 인용 특허 : 0

초록 ▼

A battery protection circuit has a condition detecting circuit which detects a voltage across a secondary cell or cells and compares the detected voltage with a reference voltage to detect an overdischarged condition or an overcharged condition of the secondary cell or cells. A control unit controls a first switching element for cutting off a discharging current and a second switching element for cutting off a charging current based on a detected condition of the secondary cell or cells. A third switch element cuts off electric power supplied to the condition detecting circuit. The third switch element is rendered nonconductive when the overdischarged condition is detected by the condition detecting circuit.

대표청구항 ▼

A battery protection circuit comprising: a secondary cell formed of a plurality of sub-cells that are connected in series with each other; condition detecting means connected to said secondary cell formed of said plurality of sub-cells for detecting a voltage across said secondary cell formed of said plurality of sub-cells and comparing the detected voltage with a reference voltage to detect an overdischarged condition or an overcharge condition of said secondary cell formed of said plurality of sub-cells; first switch means for cutting off a discharging current; second switch means for cutting off a charging current; control means connected to said condition detecting means and to said first and second switch means for controlling said first and second switch means based on a detected condition detected by said condition detecting means; third switch means for cutting off electric power supplied to said condition detecting means; power-down mode means connected to said condition detecting means and said third switch means for rendering said third switch means nonconductive when the overdischarged condition is detected by said condition detecting means whereby said third switch means is rendered conductive when the voltage of the secondary cell detected by the condition detecting means exceeds a predetermined value after the secondary cell formed of said plurality of sub-cells has been in the overdischarged condition; and means for adjusting cell charge levels controlled by said condition detecting means to equalize the charge levels of said plurality of sub-cells.

이 특허를 인용한 특허 (68)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

[미국특허] Battery protection circuit 원문보기

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[미국특허] Battery protection circuit 원문보기

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이 특허를 인용한 특허 (68)

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