Title:
APPARATUS AND METHOD FOR MONITORING VOLTAGES OF CELLS OF BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2010/032995
Kind Code:
A2
Abstract:
Disclosed are an apparatus and a method for monitoring the voltage of each cell of a battery pack, a battery driven device comprising the apparatus, and a battery pack. The apparatus for monitoring the voltage of each cell of a battery pack according to the present invention comprises: a plurality of multiplexers in one-to-one correspondence with cell groups in a battery pack, the multiplexer receiving a reference potential from a relevant cell group and outputting a voltage signal for each cell within a cell group on the basis of the reference potential; a plurality of floating capacitors for sampling and then holding the voltage of each cell, in one-to-one correspondence with the plural cells included in each cell group; and a switching means for sampling the voltage of each cell onto a relevant floating capacitor of a target cell and holding the sampled voltage; and a controller for controlling the switching means by cell group to perform sampling and to hold the voltage of each cell onto the relevant floating capacitor, and then controlling each multiplexer, thereby sensing the voltage of each cell held onto each floating capacitor relevant to a cell group connected to the target multiplexer.
Inventors:
HEO, Jin-Seok (104 287-4, Jeonmin-dong Yuseong-gu, Daejeon 305-810, 305-810, KR)
허진석 (대전광역시 유성구 전민동 287-4 104, 305-810 Daejeon, 305-810, KR)
KIM, Jee-Ho (8 Techno Valley 8 Danji, Gwanpyeong-dong Yuseong-gu, Daejeon 305-791, 305-791, KR)
김지호 (대전광역시 유성구 관평동 테크노밸리 8단지 803동 2501호, 305-791 Daejeon, 305-791, KR)
허진석 (대전광역시 유성구 전민동 287-4 104, 305-810 Daejeon, 305-810, KR)
KIM, Jee-Ho (8 Techno Valley 8 Danji, Gwanpyeong-dong Yuseong-gu, Daejeon 305-791, 305-791, KR)
김지호 (대전광역시 유성구 관평동 테크노밸리 8단지 803동 2501호, 305-791 Daejeon, 305-791, KR)
Application Number:
KR2009/005344
Publication Date:
March 25, 2010
Filing Date:
September 18, 2009
Export Citation:
Assignee:
LG CHEM, LTD. (20 Yoido-dong, Youngdungpo-gu, Seoul 150-721, 150-721, KR)
주식회사 엘지화학 (서울시 영등포구 여의도동 20, 150-721 Seoul, 150-721, KR)
HEO, Jin-Seok (104 287-4, Jeonmin-dong Yuseong-gu, Daejeon 305-810, 305-810, KR)
허진석 (대전광역시 유성구 전민동 287-4 104, 305-810 Daejeon, 305-810, KR)
KIM, Jee-Ho (8 Techno Valley 8 Danji, Gwanpyeong-dong Yuseong-gu, Daejeon 305-791, 305-791, KR)
주식회사 엘지화학 (서울시 영등포구 여의도동 20, 150-721 Seoul, 150-721, KR)
HEO, Jin-Seok (104 287-4, Jeonmin-dong Yuseong-gu, Daejeon 305-810, 305-810, KR)
허진석 (대전광역시 유성구 전민동 287-4 104, 305-810 Daejeon, 305-810, KR)
KIM, Jee-Ho (8 Techno Valley 8 Danji, Gwanpyeong-dong Yuseong-gu, Daejeon 305-791, 305-791, KR)
International Classes:
G01R31/36; G01R19/02
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (Jinsuk B/D, 8F. 1536-7, Seocho-dong,Seocho-gu, Seoul 137-872, 137-872, KR)
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