US 12,218,531 B2
Charge control device and charge control method
Kota Ogasawara, Tokyo (JP); Akira Saita, Tokyo (JP); and Toru Ogaki, Tokyo (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 24, 2022, as Appl. No. 17/679,527.
Claims priority of application No. 2021-059105 (JP), filed on Mar. 31, 2021.
Prior Publication US 2022/0320875 A1, Oct. 6, 2022
Int. Cl. H02J 7/00 (2006.01); G01R 31/374 (2019.01); G01R 31/3842 (2019.01)
CPC H02J 7/00036 (2020.01) [G01R 31/374 (2019.01); G01R 31/3842 (2019.01); H02J 7/0049 (2020.01); H02J 7/0063 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A charge control device for charging a battery with electric power supplied from an external power supply, the charge control device comprising:
an external power supply information acquisition unit that acquires external power supply information including a voltage of the external power supply;
a battery information acquisition unit that acquires battery information including a temperature, a voltage, and an electric current of the battery;
a power consumption acquisition unit that acquires an amount of electric power supplied from the battery to an auxiliary device as a power consumption amount; and
a charge time estimation unit that estimates a charge time of the battery,
wherein the charge time estimation unit
acquires an initial value of a state of charge of the battery based on the battery information,
calculates a current value of the state of charge based on a previous value of the state of charge, the temperature of the battery, the external power supply information, the power consumption amount, and
sets a time required for the current value of the state of charge to become a charge completion value or greater as the charge time.