Title:
A group battery control system and the group battery control method
Document Type and Number:
Japanese Patent JP5916429
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress reduction in discharge capacity of a battery pack as a whole even when an abnormal secondary battery is included.SOLUTION: A battery pack control system comprises: a rectifier 3 for charging a battery pack 20; disconnection switches 5 for disconnecting lithium ion cells 2 from the battery pack 20; and controllers 6 and 7 for monitoring a battery state, including voltage and temperature, of each cell 2, and controlling the rectifier 3 and each disconnection switch 5 on the basis of the battery state of each cell 2. When the battery states of the cells 2 reach a predetermined abnormal state, the controllers 6 and 7 disconnect such cells 2 by the disconnection switches 5. When the battery pack control system is charging, the output voltage of the rectifier 3 is controlled in accordance with the number of cells 2 which are disconnected.
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Inventors:
Yabuta Hiho
Tomonobu Tsujikawa
Matsushita Jie
Nobuhiko Suzuki
Kitano Riichi
Toshio Matsushima
Tomonobu Tsujikawa
Matsushita Jie
Nobuhiko Suzuki
Kitano Riichi
Toshio Matsushima
Application Number:
JP2012035042A
Publication Date:
May 11, 2016
Filing Date:
February 21, 2012
Export Citation:
Assignee:
Ntt Facilities Co., Ltd.
Ntt Facilities Research Institute, Inc.
Ntt Facilities Research Institute, Inc.
International Classes:
H02J7/00; H01M10/44; H01M10/48; H02J7/02
Domestic Patent References:
| JP2000354333A | ||||
| JP2001309563A | ||||
| JP2000133318A | ||||
| JP2011172433A |
Foreign References:
| WO2011127251A2 |
Attorney, Agent or Firm:
Harushima Shigetokiro