[특허]Selection circuit for dual batteries in a battery powered electronic device

[미국특허] Selection circuit for dual batteries in a battery powered electronic device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-010/46
출원번호	US-0922561 (1997-09-03)
우선권정보	KR-0038062 (1996-09-03)
발명자 / 주소	Kim Dong-Hwan,KRX
출원인 / 주소	SamSung Electronics Co., Ltd., KRX
대리인 / 주소	Bushnell, Esq.
인용정보	피인용 횟수 : 45 인용 특허 : 13

초록 ▼

A battery selection circuit for dual battery packs discharges the batteries in a stable way without regard to voltage differences. Also, if one of the batteries is installed, the battery is effectively selected to prolong battery life. When this circuit is adopted in a notebook computer, battery usage time is substantially increased. The battery selection circuit includes a battery detector for sensing the existence of the first and second battery packs and for producing the detect signals corresponding thereto. These detect signals are provided to a microcontroller to produce first and second battery discharge enable signals. In response to the first and second battery discharge enable signals, first and second electronic switches respectively connect each power supply line from the first and second batteries to a power supply circuit of the device. Reverse current blocking diodes are provided in series with the first and second switches, and a low resistive current path circuit is provided in parallel with the reverse current blocking diodes. The first switch and second switch as well as the low resistive current path circuit may include MOS FET transistors. Advantageously, a control circuit including logic gates is provided for opening the low resistive current path circuit when both the first and second batteries are detected, and for closing the corresponding low resistive current path circuit when one of the first and second batteries is detected.

대표청구항 ▼

[ What is claimed is:] [6.] A battery selection circuit in a dual battery powered electronic device, comprising:a first battery source;a second battery source;a battery detector for sensing the existence of the first and second battery sources and for producing detect signals corresponding thereto;a microcontroller for producing a first and second battery discharge enable signals in response to first and second battery detect signals output from the battery detector;first and second switch means for connecting each power supply line from the first and second battery sources to a power supply circuit of the device in response to the first and second battery discharge enable signals;a cut off means for blocking reverse currents in the power supply lines and provided in series with the first and second switch means;a current path means for providing low resistive current paths, the current path means being in parallel with the cut off means; anda control means for opening the low resistive current paths when the first and second battery sources are detected by the battery detector and for closing the corresponding low resistive current path when one of the first and second battery sources is detected by the battery detector;the control means comprising a digital gate circuit having two inputs supplied with the first and second battery discharge enable signals and two outputs connected to each of the low resistive current paths at the first and second battery power supply lines, the gate circuit producing, in response to the same logical input signals, the same inverted logical output signals at the two outputs, and, producing in response to different levels of logical input signals, the same logical output signals as those of the input signals.

이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

Eguchi Yasuhito (Kanagawa JPX) Sato Masayuki (Tokyo JPX) Narushima Toshio (Kanagawa JPX) Sanpei Akira (Fukushima JPX) Murano Kanji (Tokyo JPX), Circuit for preventing overcharge and overdischarge of secondary batteries.
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Tamai Mikitaka (Sumoto JPX), Circuit to prevent excessive rechargeable battery discharge.
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Allen Paul M. (Cincinnati OH) Kuhn John R. (West Chester OH), Connecting multiple batteries to battery powered devices.
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Allen Paul M. (Cincinnati OH) Kuhn John R. (West Chester OH), Connection multiple batteries to battery powered devices.
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Willis Scott C. (Manassas VA), Efficient fault tolerant switching circuit for redundant d. c. power supplies.
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Asai Takayuki (Tokyo JPX) Sato Yukio (Shizuoka JPX), Hand-held electronic apparatus using two batteries sequentially supplying current to inductive element.
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Stockstad Troy L. (Phoenix AZ), Method for balancing power sources and structure therefor.
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Staarman John L. (Boulder CO) Ziemkowski Theodore B. (Boulder CO), Over-discharge protection for rechargeable batteries.
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Kasashima Masahiko (Tokyo JPX) Nanno Nobuyuki (Tokyo JPX) Takeguchi Kouichirou (Tokyo JPX) Akashi Kazuo (Tokyo JPX) Suzuki Yoshiaki (Tokyo JPX) Ando Makoto (Tokyo JPX) Yamanaka Yuji (Tokyo JPX), Personal computer for performing charge and switching control of different types of battery packs.
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Nanno Nobuyuki (Tokyo JPX) Akashi Kazuo (Tokyo JPX) Ando Makoto (Tokyo JPX) Takeguchi Kouichirou (Tokyo JPX) Yamanaka Yuji (Tokyo JPX) Saito Toshimitsu (Tokyo JPX) Oka Mayumi (Tokyo JPX) Ootake Atsuh, Portable computer powered by rechargeable batteries.
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Makino Toshihiko (Sagamihara JPX), Portable electronic equipment with attachment for supplying power and charging battery.
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Ishida Hideo (Nagoya JPX) Tanahashi Toshitaka (Okazaki JPX) Banzai Keiichiro (Toyota JPX), Power source apparatus for vehicles.
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Morita Hideyo (Sumoto JPX) Mino Takayuki (Mihara-gun JPX), Power supply apparatus to provide power to electrical equipment from a plurality of battery packs and its method of powe.
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이 특허를 인용한 특허 (45) 인용/피인용 타임라인 분석

Yeon-Chul Choo KR, Apparatus and method for controlling power supply to a battery-powered electronic device.
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Carter, Danis; Landis, Terry; Wallner, Thomas; Leek, John, Apparatus and system for a battery pack assembly used during mechanical ventilation.
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Scruggs, Michael K.; Sozusen, Serdar T., Apparatus for bi-directional power switching in low voltage vehicle power distribution systems.
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Ghazarian, Ohanes D.; Chen, Chau-Ho, Automatic dual battery charger mobile communication apparatus.
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Andrew J. Fisher ; Steven D. Holehan ; Jonathan E. James ; Jon H. Liu ; Thomas T. Pham ; Donald G. Scharnberg, BATTERY CALIBRATION SYSTEM FOR DISCHARGING A RECHARGEABLE BATTERY AND GENERATING AN AC DETECT SIGNAL TO POWER MANAGEMENT LOGIC TO MAINTAIN NORMAL COMPUTER OPERATION EVEN WHEN BATTERY IS BELOW CERTAIN.
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Harada Naofumi,JPX ; Shimizu Hirotaka,JPX ; Kawata Kaoru,JPX, Battery charging and discharging control circuit which charges an expansion battery only if there is a full charge on an internal battery.
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Andrieux, Claude; Jourdain, Cedric, Battery management for a breathing assistance system.
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Lin, Yi-shing, Battery management system.
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Lin, Yi-shing, Battery management system.
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Erickson, Earl; Shindel, William, Battery monitoring systems and methods.
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Carter, Danis; Landis, Terry; Wallner, Thomas; Leek, John, Battery pack assembly having a status indicator for use during mechanical ventilation.
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Rich Joe G., Circuit utilizing current flowing from a high-potential battery bank to a low-potential battery bank.
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Li, Guo Xing, Circuits and methods for monitoring multi-cell battery packs.
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Ghazarian, Ohanes D., Dual battery charger mobile communication apparatus.
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Johnson, Michael W, Dual battery configuration and method of using the same to provide a long-term power solution in a programmable smart card.
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Rockow Bruce C. ; Vu Thuc Khanh, Dual feed hot swap battery plant controller for power supplies.
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Smith, Gregory J.; Chen, Yinming; Furlan, Igor, Dual path break before make digital circuit.
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Gold,Robert J., Energy collection and storage system.
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Gold,Robert J., Energy collection and storage system.
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Kim, Bongyoung, Hybrid battery and its charging/discharging method.
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Gan Hong ; Takeuchi Esther S., Implantable medical device powered by double cells.
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Meador James Chester, Intelligent power management for rechargeable batteries.
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Shah,Shreya M.; Hijazi,Mohammed; Luo,Shiguo, Method and apparatus for extending battery life in regulated voltage applications.
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Carter, Danis, Method and apparatus for indicating battery cell status on a battery pack assembly used during mechanical ventilation.
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Studyvin, William B.; Coatney, Eric; Pennock, Tim; Shimp, Phillip; Miller, Greg, Method and system for cell equalization with charging sources and shunt regulators.
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Studyvin, William B.; Coatney, Eric; Pennock, Tim; Shimp, Phillip; Miller, Greg, Method and system for cell equalization with switched charging sources.
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Pham, Tan, Method and system for voltage balancing of multiple rechargeable energy storage devices.
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Miller, Stuart; Patton, James A.; Hornick, G. Michael; Buckner, Michael E.; Hanks, Nicolas J.; Bryan, Frederick, Multi-battery pack for power tools.
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Wilhelmi, Ceceli Ann; Marquez, Ricardo; Huang, Ying; Guo, Wei, Offline battery management in a device.
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Ki Sae-Woon,KRX ; Moon Joung-Nam,KRX, Portable computer usable with a specific battery pack or ordinary battery.
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Hsu, Chih-Wan; Huang, Nung-Te; Chiu, Yi-Wen; Hsu, Hsi-Ho, Power management method and electronic system using the same.
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Suzuki, Shin, Power storage system having current limiting means to control multiple parallel connected battery packs.
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Wei, Konggang; Xiong, Qiang; Wang, Yuanguo, Power supply apparatus and method, and user equipment.
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Choo Yeon-Chul,KRX, Power supply circuit and a voltage level adjusting circuit and method for a portable battery-powered electronic device.
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Masakazu Umetsu JP, Power supply control in portable data terminal.
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Gentner, Julien; Nicolazzi, Pascal; Mougel, Laurent; Poirot, Bertrand; Perine, Philippe, Wireless, gas flow-powered sensor system for a breathing assistance system.
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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] Selection circuit for dual batteries in a battery powered electronic device 원문보기