Title:
BATTERY SYSTEM
Document Type and Number:
Japanese Patent JP2020134355
Kind Code:
A
Abstract:
To appropriately estimate the full charge capacity of a secondary battery having hysteresis that exists in an SOC-OCV curve in a battery system mounted in a vehicle.SOLUTION: An ECU 100 divides a charge amount from start to end of external charge by a difference ΔSOC between a first SOC that indicates an SOC at start of external charge and a second SOC that indicates an SOC at termination of external charge and thereby estimates the full charge capacity of a secondary battery. The ECU 100 calculates the first SOC from an OCV before start of external charge using a charge curve and calculates the second SOC from an OCV after termination of external charge using a discharge curve.SELECTED DRAWING: Figure 1
Inventors:
UCHIDA YOSHIHIRO
Application Number:
JP2019029385A
Publication Date:
August 31, 2020
Filing Date:
February 21, 2019
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
G01R31/3842; G01R31/382; G01R31/385; H01M10/48; H02J7/00
Domestic Patent References:
| JP2014007821A | 2014-01-16 | |||
| JP2013158087A | 2013-08-15 | |||
| JP2015139346A | 2015-07-30 | |||
| JP2019174279A | 2019-10-10 | |||
| JP6927009B2 | 2021-08-25 | |||
| JP2020128953A | 2020-08-27 |
Foreign References:
| WO2020129478A1 | 2020-06-25 |
Attorney, Agent or Firm:
Fukami patent office