US 12,296,714 B2
Charge and discharge control device and charge and discharge control method including first, second, and third charge level ranges
Keisuke Ogasawara, Tokyo (JP); and Tomoki Takegami, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/599,561
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jun. 12, 2019, PCT No. PCT/JP2019/023296
§ 371(c)(1), (2) Date Sep. 29, 2021,
PCT Pub. No. WO2020/250342, PCT Pub. Date Dec. 17, 2020.
Prior Publication US 2022/0200313 A1, Jun. 23, 2022
Int. Cl. B60L 58/16 (2019.01); B60L 58/13 (2019.01); G01R 31/392 (2019.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01); B60L 58/12 (2019.01); H02J 7/34 (2006.01)
CPC B60L 58/16 (2019.02) [B60L 58/13 (2019.02); G01R 31/392 (2019.01); H01M 10/441 (2013.01); H01M 10/482 (2013.01); H02J 7/005 (2020.01); H02J 7/0071 (2020.01); B60L 58/12 (2019.02); H02J 7/00032 (2020.01); H02J 7/0013 (2013.01); H02J 7/0048 (2020.01); H02J 7/00712 (2020.01); H02J 7/342 (2020.01)] 13 Claims
OG exemplary drawing
 
1. A charge and discharge control device electrically connected to a battery of a vehicle, comprising:
processing circuitry configured to:
obtain storage degradation information indicating a magnitude of storage degradation of the battery of the vehicle on the basis of a charge level of the battery of the vehicle, the storage degradation being degradation of the battery of the vehicle over time exclusive of charge and discharge of the battery of the vehicle;
obtain cycle degradation information indicating a magnitude of battery degradation caused by the charge and discharge of the battery of the vehicle;
select one charge level range from among (i) a first charge level range entirely lower than a second charge level range, and (ii) a third charge level range entirely higher than the second charge level range;
determine a charge level at storage during which the charge and discharge of the battery of the vehicle are not performed for which to set the charge level of battery at upon reaching a condition where the charge and discharge of the battery of the vehicle is stopped on a basis of the storage degradation information and the cycle degradation information, the second charge level range corresponding to a maximum value of the storage degradation;
set a storage time and a charging time responsive to the determined charge level at storage being within the second charge level range;
select one of the first charge level range or the third charge level range based on whether the storage time is greater than the charging time; and
perform selective control to one of charge or discharge of the battery of the vehicle on the basis of the determined charge level at storage and the selected one of the first charge level range or the third charge level range.