Title:
電池監視回路、および、電池監視システム
Document Type and Number:
Japanese Patent JP5758131
Kind Code:
B2
Abstract:
A battery monitoring circuit monitors voltages of a plurality of secondary cells connected in series. The battery monitoring circuit comprises a first switch element, a second switch element, a third switch element, and a first capacitor. The battery monitoring circuit comprises an operational amplifier of which an inverting input terminal is connected to a second end of the first capacitor, a non-inverting input terminal is connected to a fixed potential, and an output is connected to the second end of the first capacitor. The battery monitoring circuit comprises an A/D converter which performs analog-to-digital conversion on a signal output by the operational amplifier and outputs an obtained digital signal. The battery monitoring circuit comprises a control circuit which performs on/off control on the first to third switch elements and controls operations of the operational amplifier and the A/D converter.
Inventors:
Nakagawara Satoshi
Application Number:
JP2011006868A
Publication Date:
August 05, 2015
Filing Date:
January 17, 2011
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G01R19/00; H01M10/42; H01M10/48; H02J7/02
Domestic Patent References:
| JP2008145180A | ||||
| JP2003284253A |
Attorney, Agent or Firm:
Takumi Hara