US 12,463,547 B2
Power supply, power supplying method and computer storage medium
Chen Tian, Guangdong (CN); Jialiang Zhang, Guangdong (CN); Jingpeng Zhu, Jiangsu (CN); Weiwei Lu, Jiangsu (CN); Juanjuan Sun, Jiangsu (CN); and Julu Sun, 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 May 2, 2023, as Appl. No. 18/311,201.
Application 18/311,201 is a continuation of application No. PCT/CN2021/114120, filed on Aug. 23, 2021.
Claims priority of application No. 202011261778.X (CN), filed on Nov. 12, 2020.
Prior Publication US 2023/0268843 A1, Aug. 24, 2023
Int. Cl. H02M 7/06 (2006.01); H02M 3/00 (2006.01); H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 1/42 (2007.01); H02M 3/158 (2006.01)
CPC H02M 7/06 (2013.01) [H02M 3/01 (2021.05); H02M 3/33573 (2021.05); H02M 3/33592 (2013.01); H02M 1/007 (2021.05); H02M 1/42 (2013.01); H02M 1/4266 (2013.01); H02M 3/1582 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power supply, comprising:
a rectifier circuit, configured to perform voltage conversion on an input alternating current (AC) voltage to obtain a first pulsating direct current (DC) voltage;
a valley-fill circuit, comprising at least one energy storage capacitor; wherein the valley-fill circuit is configured to: store energy through the at least one energy storage capacitor when the first pulsating DC voltage output by the rectifier circuit is in a first preset range, and provide energy through the at least one energy storage capacitor when the first pulsating DC voltage output by the rectifier circuit is lower than a preset threshold to thereby increase a valley voltage of the first pulsating DC voltage;
wherein the valley-fill circuit further comprises a control switch; an end of the at least one energy storage capacitor is connected to an end of the control switch, another end of the at least one energy storage capacitor is connected to a positive output end of the rectifier circuit, and another end of the control switch is connected to a negative output end of the rectifier circuit; and
wherein the valley-fill circuit is configured to:
control, in response to detecting that the first pulsating DC voltage rises to a lower limit value of the first preset range, the control switch to be at a turned-on state to store energy through the at least one energy storage capacitor,
control, in response to detecting that the first pulsating DC voltage rises to an upper limit value of the first preset range, the control switch to be switched from the turned-on state to a turned-off state to maintain energy of the at least one energy storage capacitor,
control, in response to detecting that the first pulsating DC voltage drops from the upper limit value to the preset threshold, the control switch to be at the turned-on state to provide energy through the at least one energy storage capacitor to thereby increase the valley voltage of the first pulsating DC voltage.