Title:
BATTERY VOLTAGE MONITORING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/051581
Kind Code:
A1
Abstract:
A battery voltage monitoring device 1 is configured by being provided with: voltage detection lines 3 that are connected to both ends of each of a plurality of batteries 2 that are connected in series; a switch 41 and a resistor 42, which are connected in series, and are connected between the voltage detection lines 3 adjacent to each other; and a monitoring unit 5 that monitors a monitoring voltage between the voltage detection lines 3 adjacent to each other. The monitoring unit 5 diagnoses that an abnormality occurred in the voltage detection lines 3 when a difference Vd between a monitoring voltage Voff between the voltage detection lines 3 when the switch 41 is turned off, and a monitoring voltage Von between the voltage detection lines 3 when the switch 41 is turned on is equal to or more than a threshold value Vth.
Inventors:
YAMAMOTO TAKUYA (JP)
YAMAMOTO SATOSHI (JP)
KATO HIROAKI (JP)
SATO KIMIHIRO (JP)
YAMAMOTO SATOSHI (JP)
KATO HIROAKI (JP)
SATO KIMIHIRO (JP)
Application Number:
PCT/JP2016/069348
Publication Date:
March 30, 2017
Filing Date:
June 29, 2016
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
H02J7/00; G01R31/36; H01M10/42; H01M10/44; H01M10/48; H01M50/569; H02J7/02
Foreign References:
| JP2002168928A | 2002-06-14 | |||
| JP2009103706A | 2009-05-14 | |||
| JP2010127722A | 2010-06-10 | |||
| US20120025835A1 | 2012-02-02 |
Attorney, Agent or Firm:
OSUGA, Yoshiyuki (JP)
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