POWER SUPPLY DEVICE, CIRCUIT CONTROL METHOD AND POWER SUPPLY SYSTEM - GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

Title:

POWER SUPPLY DEVICE, CIRCUIT CONTROL METHOD AND POWER SUPPLY SYSTEM

Document Type and Number:

WIPO Patent Application WO/2022/100269

Kind Code:

A1

Abstract:

A power supply device (200), a circuit control method and a power supply system (800), belonging to the field of power supply conversion technologies. The power supply device (200) can ensure that a second-stage transformation circuit (220) has a sufficiently high valley voltage by means of a valley-fill circuit (230) without using an electrolytic capacitor or other large-volume capacitors, thereby ensuring that the output voltage of the power supply device (200) is overall stable. On the other hand, the power supply device (200) can, by controlling the voltage at both ends of an energy storage unit in the valley-fill circuit (230), utilize the ability of the energy storage unit to store electric energy as far as possible whilst ensuring that the voltage does not exceed a voltage rating, so as to lower the requirements on the voltage resistance of the energy storage unit, thereby realizing the miniaturized design of the power supply device (200) and improving the portability of the power supply device (200).

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Inventors:

TIAN CHEN (CN)
ZHANG JIALIANG (CN)
ZHU JINGPENG (CN)
LU WEIWEI (CN)
SUN JUANJUAN (CN)
SUN JULU (CN)

Application Number:

PCT/CN2021/118072

Publication Date:

May 19, 2022

Filing Date:

September 13, 2021

Export Citation:

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Assignee:

GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
POWERLAND TECH INC (CN)

International Classes:

H02M7/04

Foreign References:

CN112448601A	2021-03-05
CN109889062A	2019-06-14
US10224806B1	2019-03-05
CN111771326A	2020-10-13
CN1521928A	2004-08-18
CN106160479A	2016-11-23

Other References: