Title:
The control method of the control device of a group battery, an electric power unit, and a group battery
Document Type and Number:
Japanese Patent JP5919093
Kind Code:
B2
Abstract:
Provided is a means for determining, by a simple method, a degradation state for each cell group having the same characteristics in order to appropriately control a battery pack configured by combining a plurality of secondary cells having different characteristics. A device for controlling a battery pack configured by connecting chargeable/dischargeable first secondary cells having a first characteristic and chargeable/dischargeable second secondary cells having a second characteristic, wherein the device for controlling a battery pack is provided with: a memory unit for storing the first characteristic and the number of first secondary cells, and the second characteristic and the number of second secondary cells; and a voltmeter for detecting the voltage of the battery pack; a control unit for sensing a voltage variation rate or capacitance variation rate on the basis of the output of the voltmeter; and the degradation rate of the first secondary cells and the degradation rate of the second secondary cells are determined in the control unit on the basis of the voltage variation rate and the capacitance variation rate, the first characteristic and the number of first secondary cells, and the second characteristic and the number of second secondary cells.
Inventors:
Honzo Kohei
Application Number:
JP2012121478A
Publication Date:
May 18, 2016
Filing Date:
May 29, 2012
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G01R31/36; H01M10/48
Domestic Patent References:
| JP2012054019A | ||||
| JP2008260346A | ||||
| JP2006300561A |
Foreign References:
| WO2011045853A1 |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki
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