[특허]Cordless device with battery imbalance indicator

[미국특허] Cordless device with battery imbalance indicator 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G08B-021/00
출원번호	US-0519382 (1995-08-25)
발명자 / 주소	Bradus Robert
출원인 / 주소	Black & Decker Inc.
대리인 / 주소	Dearing
인용정보	피인용 횟수 : 11 인용 특허 : 18

초록 ▼

A cordless device 11 comprises a load 13 and a multiple pack power supply 15 connected to load 13. A voltage detection circuit 23, 63, 64, 75, 76 is connected to supply 15 and detects when one of the batteries 17, 19 is charged and the other is discharged. Circuits 23, 63, 65, 75, 76 may also function as a voltage comparator circuit to identify when one of the batteries 17, 19 is defective. The detection or comparator circuit includes comparators 25, 33 for comparing the battery voltages. An indicator 41, 43, 65, 74, 81 is connected to the output of comparators 25, 33 and provides an end user identifiable signal responsive to the outputs of comparators 25, 33.

대표청구항 ▼

[ I claim:] [1.] A battery powered device for supplying power to a load comprising:a power supply connectable to the load and comprising first and second batteries;the first and second batteries being connected in series with the voltage of each battery being summed with the voltage of the other battery to provide a summed voltage for application to the load;a first voltage divider circuit across which is established a first voltage representative of the summed voltage and across a portion of which is established a second voltage representative of the voltage of the first battery;a second voltage divider circuit across which is established a third voltage representative of the summed voltage and across a portion of which is established a fourth voltage representative of the voltage of the second battery;a battery-connection circuit connected between the first and second batteries for establishing voltage levels representative of the actual voltage of the first and second batteries; anda voltage detection circuit, connected to the first voltage divider circuit, the second voltage divider circuit and the battery-connection circuit, for detecting that the first battery is charged and the second battery is substantially discharged when the voltage of the second battery exceeds the voltage of the first battery by a first predetermined amount proportional to the summed voltage, and for detecting that the second battery is charged and the first battery is substantially discharged when the voltage of the first battery exceeds the voltage of the second battery by a second predetermined amount proportional to the summed voltage.

이 특허에 인용된 특허 (18) 인용/피인용 타임라인 분석

Groehl Lawrence R. (Eatontown NJ), Abnormal battery cell voltage detection circuitry.
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Bobbett Ronald E. (Los Alamos NM) McCormick J. Byron (Los Alamos NM) Kerwin William J. (Tucson AZ), Automatic voltage imbalance detector.
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Irick W. Thomas (New Haven IN) Singer Michael R. (Fort Wayne IN), Auxiliary battery monitor.
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Gold Kenneth S. (7721 Nevada Ave. Canoga Park CA 91304), Battery condition indicator and on-off relay circuit.
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Whitmire Warren T. (3 Longwood Dr. Shalimar FL 32579) Anderson Larry T. (720 E. Sunset Blvd. Ft. Walton Beach FL 32548), Battery condition monitoring system for batteries connected in parallel.
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Feldman Keiva (Ottawa CAX), Battery deterioration monitoring apparatus employing voltage comparison means for activation of a battery alarm.
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Nofzinger Scott L. (Toledo OH), Battery equalization circuit for a dual voltage charging system.
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Watrous Donald L. (Liverpool NY) Weischedel Richard C. (Camillus NY), Battery monitor circuit.
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Whitmire Warren T. (P.O. Box 983 Shalimar FL 32579) Anderson Larry T. (720 E. Sunset Blvd. Ft. Walton Beach FL 32548), Battery monitoring and condition indicator system for multi-battery pack.
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Nowak Dieter K. (Route 2 ; Box 2916 Winchester TN 37398), Battery voltage measurement system.
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Schnizler Albrecht (Nurtingen DEX) Benzing Rolf (Neuffen DEX), Cordless dual-battery electric tool.
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Ijntema, Johannes, Device for signalling a specific charge condition of an accumulator battery.
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Matteau Michel (Gloucester CAX) Braun Howard R. (Almonte CAX) Gardner Christopher L. (Dunrobin CAX), Lithium battery protection circuit.
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Dubois Harvey W. (P.O. Box 9568 New Iberia LA 70560) Heselton Fred (New Iberia LA), Low D.C. and loss of A.C. sensor and alarm with service inhibitor.
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Holland John F. (2411 Lyman Dr. Lansing MI 48912), Method and apparatus for monitoring and indicating the condition of a battery and the related circuitry.
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Cancasci ; Jr. Maurice V. (Mason OH), Multiple font display control.
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Sawyer Richard D. (Canton CT), Negative cell detector for a multi-cell fuel cell stack.
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Takabayashi Yasuhiro (Kawasaki JPX), Protective apparatus and method for a fuel cell.
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이 특허를 인용한 특허 (11) 인용/피인용 타임라인 분석

Flechsig Karl A. ; Gillis Donald Ray, Active bypass circuit for extending energy capacity and operational life of a multi-cell battery.
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Becker-Irvin Craig H., Battery cell voltage monitor and method.
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Kovarik, Illya; Gawell, George R., Battery charge indicating circuit.
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Ota, Tomoyuki; Nishibe, Kiyoshi; Suzuki, Hitoshi, Electric tool powered by a plurality of battery packs and adapter therefor.
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Ota, Tomoyuki; Nishibe, Kiyoshi; Suzuki, Hitoshi, Electric tool powered by a plurality of battery packs and adapter therefor.
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Suzuki, Hitoshi, Electric tool powered by a plurality of battery packs and adapter therefor.
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Hornick, George Michael; Minalga, Philip F.; Soultanian, Daniel S., Energy source monitoring and control system.
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Hornick,George Michael; Minalga,Philip F.; Soultanian,Daniel S., Energy source monitoring and control system for power tools.
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Gelnovatch Vladimir G. ; Buser Rudolf G., Non-intrusive battery status indicator and inventory system.
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Neumann Peter W., Power supply system for battery operated devices.
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Murayama Shingo,JPX ; Futamata Akira,JPX, Power supply voltage detection device.
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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] Cordless device with battery imbalance indicator 원문보기