Title:
SECONDARY BATTERY CONTROLLER
Document Type and Number:
Japanese Patent JP2018050405
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve the problem of incapability of elongating a life of a secondary battery depending on deterioration of the secondary battery.SOLUTION: A secondary battery controller determines whether or not a difference between the average value of negative electrode capacity deviations dn1 calculated in a step S15 and a negative electrode capacity deviations dn2 calculated in a step S16 is larger than a predetermined value D, in a step S17; when the average value of actually measured negative electrode capacity deviations dn1 is larger than an ideal negative electrode capacity deviation dn2 and deterioration in the negative electrode capacity deviations dn1 has progressed, performs control of operating a secondary battery 10 using high voltage, in a next step S18, thereby, suppressing deterioration in the negative electrode capacity deviations dn1 to elongate a life of the secondary battery 10; and when the average value of actually measured positive electrode utilization ratios mp1 is lower than an ideal positive electrode utilization ratio mp2 and deterioration in the positive electrode utilization ratios mp1 has progressed, lowers the upper limit current of the secondary battery 10 in a step S20 to perform control of operating the secondary battery 10, thereby, suppressing deterioration in the positive electrode utilization ratios mp1 to elongate the life of the secondary battery 10.SELECTED DRAWING: Figure 5
Inventors:
ODA MASANARI
SUZUKI SHUICHI
MAKINO SHIGEKI
ISHIZU TAKENORI
NAKAO RYOHEI
SUZUKI SHUICHI
MAKINO SHIGEKI
ISHIZU TAKENORI
NAKAO RYOHEI
Application Number:
JP2016184735A
Publication Date:
March 29, 2018
Filing Date:
September 21, 2016
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
H02J7/00; G01R31/36; H01M10/44; H01M10/48
Domestic Patent References:
| JP2013092398A | 2013-05-16 | |||
| JP2008268042A | 2008-11-06 | |||
| JP2014063576A | 2014-04-10 | |||
| JP2015026478A | 2015-02-05 |
Foreign References:
| WO2014046179A1 | 2014-03-27 |
Attorney, Agent or Firm:
Patent Business Corporation Sunnext International Patent Office