Title:
電池制御装置
Document Type and Number:
Japanese Patent JP7111642
Kind Code:
B2
Abstract:
To solve the problem in which: when there is a voltage difference between electric cells, equalization processing is performed, and when the equalization processing is performed, there is a possibility of reduction in the state of charge of the electric cells.SOLUTION: In step 100, the current SOCs of electric cells 111 are obtained and denoted as SOCbefore(i). In step 101, the SOC values of the electric cells 111 are compared with each other, and when the difference exceeds an allowable value, the electric cells 111 are subjected to equalization processing. In steps 102 to 104, the SOC values SOCafter(i) of the electric cells 111 after execution of single balancing are estimated. In step 105, the average SOC value SOCave of a battery pack 110 is obtained, and in step 106, the average SOC value SOCave is compared with a threshold SOCLimit, and when the average SOC value SOCave is less than the threshold SOClimit, the step proceeds to step 107, and the equalization processing is determined not to be executed.SELECTED DRAWING: Figure 4
Inventors:
Keiichiro Okawa
Application Number:
JP2019048372A
Publication Date:
August 02, 2022
Filing Date:
March 15, 2019
Export Citation:
Assignee:
Vehicle Energy Japan Inc.
International Classes:
H02J7/02; H01M10/44; H01M10/48; H02J7/00
Domestic Patent References:
| JP2014060868A | ||||
| JP2009071936A | ||||
| JP2014036497A |
Foreign References:
| US20140266063 |
Attorney, Agent or Firm:
Patent Business Corporation Sunnext International Patent Office
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