[특허]Battery unit having a plurality of rechargeable battery cells and method of charging the same

[미국특허] Battery unit having a plurality of rechargeable battery cells and method of charging the same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-010/44 H01M-010/46
출원번호	US-0493237 (2000-01-28)
우선권정보	JP-0321470 (1997-11-21)
발명자 / 주소	Kitahara Jun,JPX Ishii Masato,JPX Saitou Kenichi,JPX Miyata Junichi,JPX Takeoka Hitoshi,JPX
출원인 / 주소	Hitachi, Ltd., JPX
대리인 / 주소	Antonelli, Terry, Stout & Kraus, LLP
인용정보	피인용 횟수 : 52 인용 특허 : 1

초록 ▼

A battery assembly unit and a method of charging the same for applying constant current/constant voltage charging to a battery assembly in which a plurality of battery cell groups each having battery cells each being rechargeable and increasable in electromotive force as charging proceeds are connected in series. There are provided a reference charging voltage circuit for generating charging reference voltages serving as voltages referenced to electromotive force levels of the individual battery cell groups on the basis of charging voltage applied across the battery assembly and changeable with time, and comparison circuits each adapted to compare an electromotive force level across each of the plurality of battery cell groups connected in series with the charging reference voltage. Further, bypass circuits are provided each of which connected in parallel across each of the plurality of battery cell groups connected in series and when an electromotive force of a battery cell group exceeds the charging reference voltage, bypasses the charging current by an amount corresponding to a difference.

대표청구항 ▼

[ What is claimed is:] [6.] A battery assembly unit in which a plurality of battery cell groups each having battery cells each being rechargeable and increasable in electromotive force as charging proceeds are connected in series, comprising:charging interruption means connected in series with one polarity of each battery cell group of said battery assembly;bypass interruption means connected in parallel with each battery cell group of said battery assembly;a reference voltage source for generating a charging end voltage of said battery cell group as a charging end reference voltage;comparison circuits each being connected in parallel across each of said battery cell groups constituting said battery assembly to compare a potential difference across each battery cell group with the charging end reference voltage of said reference voltage source and being operative to deliver a charging end voltage detection signal for each battery cell group when the potential difference across each battery cell group reaches the charging end voltage; anda charging circuit configuration control sequence circuit for receiving the charging end voltage detection signal for each battery cell group from said comparison circuit and delivering a control signal which opens said charging interruption means and closes said bypass interruption means associated with a battery cell reaching the charging end voltage and further delivers to an external power supply a charging voltage designating signal which instructs a charging voltage conforming to the number of battery cells excepting the battery cell reaching said charging end voltage.

이 특허에 인용된 특허 (1) 인용/피인용 타임라인 분석

Petersson Bo A. O. (Hgersten SEX) Hansson Leif T. (Rnninge SEX) Samsioe Per-Edward (Sollentuna SEX), Charging regulator.
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이 특허를 인용한 특허 (52) 인용/피인용 타임라인 분석

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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

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[미국특허] Battery unit having a plurality of rechargeable battery cells and method of charging the same 원문보기