US 11,811,254 B2
Power conversion circuit, and charging apparatus and system
Jun Song, Xi'an (CN); and Pengfei Wang, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jul. 8, 2022, as Appl. No. 17/860,402.
Application 17/860,402 is a continuation of application No. 16/706,030, filed on Dec. 6, 2019, granted, now 11,404,895.
Application 16/706,030 is a continuation of application No. PCT/CN2018/090279, filed on Jun. 7, 2018.
Claims priority of application No. 201710429394.6 (CN), filed on Jun. 8, 2017.
Prior Publication US 2023/0017143 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 7/00 (2006.01); H02M 3/07 (2006.01)
CPC H02J 7/007 (2013.01) [H02J 7/00034 (2020.01); H02J 2207/20 (2020.01); H02M 3/07 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A terminal comprising:
a power conversion circuit configured to:
charge a battery in a first charging mode, wherein the battery comprises a positive end and a negative end, wherein the negative end of the battery is grounded, and wherein a control signal time sequence in the first charging mode comprises a first time period and a second time period; and
operate in a first circuit structure in the first charging mode, wherein in the first circuit structure, during the first time period of the first charging mode:
a connection between a first end of a capacitor and an input power supply is configured to be switched on;
a connection between a second end of the capacitor and the positive end of the battery is configured to be switched on;
a connection between the first end of the capacitor and the positive end of the battery is configured to be switched off; and
a connection between the second end of the capacitor and a ground is configured to be switched off,
wherein in the first circuit structure, during the second time period of the first charging mode:
the connection between the first end of the capacitor and the input power supply is configured to be switched off;
the connection between the second end of the capacitor and the positive end of the battery is configured to be switched on;
the connection between the first end of the capacitor and the positive end of the battery is configured to be switched off; and
the connection between the second end of the capacitor and the ground is configured to be switched off,
wherein during the first charging mode, a voltage of the input power supply approaches twice a voltage of the battery.