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Title:
BATTERY MONITORING DEVICE PROTECTION CIRCUIT AND BATTERY MONITORING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/105342
Kind Code:
A1
Abstract:
A protection circuit for a battery monitoring device for monitoring a battery module protects a circuit from overcurrent without blowing out a path. A signal line group (12) of the protection circuit (11) comprises a plurality of voltage signal lines (12A), wherein the voltage signal lines (12A) are connected to the electrode portions (2C) of a plurality of unit batteries (4) or the electrode portions (2A, 2B) of a battery module (2), respectively. A first protection circuit (13) is provided with a plurality of Zener diodes (16), wherein each of the Zener diodes (16) is connected between the signal lines of the plurality of voltage signal lines (12A) and in parallel with each of the unit batteries (4). A resistor portion group (15) comprises a plurality of resistor portions (19), wherein each of the resistor portions (19) is interposed between the Zener diodes (16) and the unit batteries (4) in each of the voltage signal lines (12A) and limits current. A second protection circuit unit (14) is provided with a plurality of varistors (17), wherein each of the varistors (17) is connected between the signal lines of the plurality of voltage signal lines (12A) and in parallel with each of the unit batteries (4).

Inventors:
SATO, Shinichiro (1-14, Nishisuehiro-cho, Yokkaichi-sh, Mie 03, 〒5108503, JP)
Application Number:
JP2017/041172
Publication Date:
June 14, 2018
Filing Date:
November 16, 2017
Export Citation:
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Assignee:
AUTONETWORKS TECHNOLOGIES, LTD. (1-14, Nishisuehiro-cho Yokkaichi-sh, Mie 03, 〒5108503, JP)
SUMITOMO WIRING SYSTEMS, LTD. (1-14, Nishisuehiro-cho Yokkaichi-sh, Mie 03, 〒5108503, JP)
SUMITOMO ELECTRIC INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
International Classes:
H02J7/00; H01M10/48; H02H9/04; H02J7/02
Foreign References:
JP2014090635A2014-05-15
JP3150369U2009-05-07
JP2010057265A2010-03-11
JPS59122733U1984-08-18
Attorney, Agent or Firm:
GRANDOM PATENT LAW FIRM (Hirokoji Sakae Bldg. 3F, 4-1 Sakae 2-chome, Naka-ku, Nagoya-sh, Aichi 08, 〒4600008, JP)
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