Title:
Battery monitor
Document Type and Number:
Japanese Patent JP6026371
Kind Code:
B2
Abstract:
Even with a large ripple voltage superposed on a voltage of a battery cell, the voltage of the battery cell can be measured accurately. In a battery monitoring device 1, a supply circuit 13, based on a reference voltage 17 inputted from an assembled battery 2, generates a driving voltage 18 for driving each of switching elements 110p, 111p, 111m, and 112m of a selection circuit 11 and supplies the driving voltage 18 to the selection circuit 11. The reference voltage 17 is inputted from the assembled battery 2 to the supply circuit 13 via a detecting filter circuit 120. As a result, a time constant of a route through which the reference voltage 17 is inputted from the assembled battery 2 to the supply circuit 13 is approximately equal to time constants of detecting filter circuits 120 to 122.
Inventors:
Hiroshi Iwasawa
Akihiko Kudo
Mitsuo Noda
Mutsumi Kikuchi
Tomonori Kanai
Akihiko Kudo
Mitsuo Noda
Mutsumi Kikuchi
Tomonori Kanai
Application Number:
JP2013173322A
Publication Date:
November 16, 2016
Filing Date:
August 23, 2013
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
G01R19/00; G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| JP2012044768A | ||||
| JP2011232161A | ||||
| JP2013053884A |
Attorney, Agent or Firm:
Fuyuki Nagai
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