US 12,224,614 B2
Charging system, method and device for controlling charging system, and electronic device
Lei Liang, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed by BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed on Jan. 25, 2022, as Appl. No. 17/583,979.
Claims priority of application No. 202110886171.9 (CN), filed on Aug. 3, 2021.
Prior Publication US 2023/0045028 A1, Feb. 9, 2023
Int. Cl. H02J 7/00 (2006.01); H02J 7/34 (2006.01)
CPC H02J 7/007182 (2020.01) [H02J 7/00714 (2020.01); H02J 7/345 (2013.01); H02J 2207/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A charging system, comprising:
a power management integrated circuit;
a bidirectional voltage conversion circuit, the bidirectional voltage conversion circuit being configured to work in a working mode comprising at least a boost mode and a buck mode;
a controller having a first input terminal; and
a battery level detection circuit,
an input terminal of the battery level detection circuit being connected to a battery,
an output terminal of the battery level detection circuit being connected to the first input terminal of the controller, and
the battery level detection circuit being configured to detect a voltage and a current of the battery and transmit the voltage and the current of the battery to the controller, and
wherein the controller is configured to control the working mode of the bidirectional voltage conversion circuit and a working state of the power management integrated circuit according to the voltage and the current of the battery.