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특허 상세정보

Battery charge indicator

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H02J-007/00   
미국특허분류(USC) 320/132; 324/427
출원번호 US-0732942 (2003-12-11)
등록번호 US7876068 (2011-01-10)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Katten Muchin Rosenman LLP
인용정보 피인용 횟수 : 5  인용 특허 : 18
초록

The resistors R1 and R2 are applied to terminals 1 and 8, respectively, of the switched-mode power supply 26. These resistors R1 and R2 are current-limiting resistors and function to control the output power and current. A standard buck regulator may be coupled to terminal 5 of the switched-mode power supply 26. The buck regulator includes a diode D7 and an inductor L1. The diode D7 and inductor L1 provide DC rectification and filtering of the high-frequency switch voltage from the switched-mode power supply 26.

대표
청구항

What is claimed and desired to be secured by a Letters Patent of the United States is: 1. A battery charge indicator for sensing and indicating various states of charge of a lithium ion battery, the battery charge indicator comprising:a current sensing circuit for sensing charging current to said lithium ion battery during a constant current mode of operation and a constant voltage mode of operation and providing a first charge indication signal based upon comparing the magnitude of said charging current with a first predetermined value and generating a ...

이 특허에 인용된 특허 (18)

  1. Park Hae-Woo (Ulsan-shi KRX). Battery charging control device and method for accurately detecting a charging end state. USP1997065635820.
  2. Nagai Shinji (Atsugi JPX). Battery pack including measuring and indicating. USP1993065216371.
  3. Robert Michael Johnson, Jr. ; John Wendell Oglesbee ; John Edward Herrmann. Battery trickle charging circuit. USP2002126492792.
  4. Mills Charles J. Booster with switch actuated cable decoupler. USP2000056057667.
  5. Carrier David A. ; Woods Samuel G. ; Strong David S.,CAX ; Gifford Carl W.,CAX ; Dyke Colin M.,CAX. Cordless electric lawn mower having energy management control system. USP1999085937622.
  6. Yau, Kwok Wong; Li, Yiu Cheung; Bai, Long. Intelligent serial battery charger and charging block. USP2003066580249.
  7. Kotlow, Daniel B.; Mahon, John J.; Barberis, Carlos A.. METHOD OF REGULATING POWER CONSUMPTION BY ELECTRONIC EQUIPMENT CONTAINING INTEGRAL RECHARGEABLE BACKUP BATTERIES AND USED IN SYSTEMS WHERE THE EQUIPMENT OPERATES FROM A VEHICLE ENGINE BATTERY AND THE. USP2004066747371.
  8. Ostergaard Kim,DKX ; Nielsen Otto Martinus,DKX ; Stuck Andersen Kim Arthur,DKX ; Michelsen Jesper,DKX ; Rasmussen Kim,DKX. Method and apparatus for charging a rechargeable battery. USP1999115994878.
  9. Kaite Osamu (Hyogo JPX) Okada Tatsuya (Hyogo JPX) Kokuga Toshiharu (Hyogo JPX). Method and apparatus for charging a secondary battery. USP1996125589755.
  10. Guiheen, James V.; Singh, Harmohan; Palanisamy, Thirumalai G.. Method and apparatus for determining the state of charge of a lithium-ion battery. USP2003076586130.
  11. Gaza Brian Scott. Microcontrolled battery charger. USP1999126002237.
  12. Gaza Brian Scott. Microcontrolled battery charger. USP1998065764030.
  13. Sasaki Masayoshi (Miyagi JPX) Umetsu Koji (Miyagi JPX) Sameshima Tsugio (Chiba JPX). Multi-rate constant voltage battery charger with display. USP1992125172044.
  14. Leppo Lee Edward ; Weiss Martin M. ; Solanki Prashant A.. Power distribution in a portable device. USP2001016172478.
  15. Matsunaga, Yutaka; Suzuki, Hitoshi; Ishikawa, Goushi. Power tools. USP2004086771043.
  16. Lewyn Lanny L. (Laguna Beach CA). Rapid charging technique for lithium ion batteries. USP1997095670862.
  17. Morioka Shizuo,JPX ; Hosoya Nobuyuki,JPX ; Ukiya Yoshiaki,JPX ; Ozawa Katsuo,JPX ; Tanaka Masayasu,JPX. System for executing charge control of a secondary battery and detecting the capacitance thereof. USP1998115831412.
  18. Schousek Brian Walter ; Schousek Theresa Jean. Universal battery monitor. USP2001046222370.