Title:
電圧測定装置および電圧測定方法、並びに電圧制御装置および電圧制御方法
Document Type and Number:
Japanese Patent JP6627635
Kind Code:
B2
Abstract:
A voltage measuring apparatus that individually measures voltages of n-pieces (2≤n) of power storage elements B(1) to B(n) connected in series includes: first to n-th voltage detecting units that respectively individually measure voltages of the power storage elements; a switching circuit that switches a connection state between the power storage elements and the first to n-th voltage detecting units; a SW control unit that drives the switching circuit; and an operation processing unit. The power storage elements are arranged in order so that potential becomes higher as n increases. The switching circuit includes a capacitor connected in parallel to the power storage element B(1). In the switching circuit, the negative terminals of the power storage elements are connected to a first terminal of the capacitor via respective corresponding first switches. The positive terminals of the power storage elements are connected to a second terminal of the capacitor via respective corresponding second switches. A third switch SW3 is interposed between the first voltage detecting unit and the first terminal. When the first switch and the second switch corresponding to the power storage element B(j) (j is any of 1 to n) are respectively switches SWj1 and SWj2, the SW control unit closes the switches SWj1 and SWj2 and opens other first and second switches according to an instruction of the operation processing unit, so that the capacitor is connected in parallel to the power storage element B(j).
Inventors:
Yohei Yamaguchi
Satomi Kataoka
Keino Kono
Takahiro Matsuura
Hiroaki Takechi
Satomi Kataoka
Keino Kono
Takahiro Matsuura
Hiroaki Takechi
Application Number:
JP2016085796A
Publication Date:
January 08, 2020
Filing Date:
April 22, 2016
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
H02J7/02; H01M10/44; H01M10/48
Domestic Patent References:
| JP2012220448A | ||||
| JP2012514449A | ||||
| JP2007250521A | ||||
| JP2002357624A |
Foreign References:
| WO2015029283A1 |
Attorney, Agent or Firm:
Shinichi Kawasaki
Yuko Tsumura
Yuko Tsumura