US 12,176,801 B2
Power source providing apparatus, and charging method and system
Chen Tian, Guangdong (CN); Jingpeng Zhu, Jiangsu (CN); Jialiang Zhang, Guangdong (CN); and Ming Xu, Jiangsu (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN); and POWERLAND TECHNOLOGY INC., Jiangsu (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN); and POWERLAND TECHNOLOGY INC., Jiangsu (CN)
Filed on Dec. 29, 2022, as Appl. No. 18/148,081.
Application 18/148,081 is a continuation of application No. PCT/CN2021/108745, filed on Jul. 27, 2021.
Claims priority of application No. 202011063504.X (CN), filed on Sep. 30, 2020.
Prior Publication US 2023/0198371 A1, Jun. 22, 2023
Int. Cl. H02M 1/00 (2007.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01); H02M 3/00 (2006.01); H02M 3/158 (2006.01); H02M 3/335 (2006.01)
CPC H02M 1/0067 (2021.05) [H02J 7/00711 (2020.01); H02J 7/00712 (2020.01); H02J 7/02 (2013.01); H02M 3/01 (2021.05); H02M 3/1582 (2013.01); H02M 3/33573 (2021.05); H02J 2207/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A power supply device, comprising:
a rectifier circuit configured to perform rectification on alternating-current power to thereby obtain a first pulsating direct-current voltage;
a first-stage conversion circuit connected to the rectifier circuit, wherein the first-stage conversion circuit is configured to perform isolation conversion on the first pulsating direct-current voltage to thereby obtain a second pulsating direct-current voltage;
a second-stage conversion circuit connected to the first-stage conversion circuit, wherein the second-stage conversion circuit is configured to convert the second pulsating direct-current voltage into a stable direct-current voltage; and
a valley-fill circuit connected to the rectifier circuit and the first-stage conversion circuit individually, wherein the valley-fill circuit is configured to supply, in response to a voltage value of the first pulsating direct-current being less than a first voltage threshold, electrical power to an input of the first-stage conversion circuit to thereby increase a valley voltage of the first pulsating direct-current voltage.