US 12,444,972 B2
Power charging system and power charging method using adapter with built-in battery
Jaedeok Cha, Gyeonggi-do (KR); Sunghun Kim, Gyeonggi-do (KR); and Jinsoo Ha, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Jun. 8, 2022, as Appl. No. 17/835,088.
Application 17/835,088 is a continuation of application No. PCT/KR2022/005080, filed on Apr. 8, 2022.
Claims priority of application No. 10-2021-0079488 (KR), filed on Jun. 18, 2021.
Prior Publication US 2022/0407344 A1, Dec. 22, 2022
Int. Cl. H02J 7/00 (2006.01); H01M 10/44 (2006.01); H02J 7/34 (2006.01)
CPC H02J 7/342 (2020.01) [H01M 10/44 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A charging adapter comprising:
a first battery; and
a charging circuit configured to charge the first battery with external power and generate first power,
wherein in a fast charging mode, the charging circuit is configured to charge a second battery in an electronic device detachably connected to the charging adapter based on the first power generated and the first battery is configured to generate a second power and charge the second battery with the second power while the charging circuit charges the second battery,
wherein, in a first charging section of the fast charging mode, the first power from the charging circuit and the second power from the first battery are supplied together to the electronic device such that peak power required in a process of a step charging for a fast charging of the second battery is generated,
wherein, after a predetermined time has elapsed from a start of the first charging section, charging in a second charging section is performed in order to reduce battery degradation, and
wherein, in the second charging section, a current lower than a current of the first charging section is supplied to the second battery based on the first power.