Title:
POWER SUPPLY SYSTEM, SLOW-START CIRCUIT, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/105242
Kind Code:
A1
Abstract:
Provided are a power supply system, a slow-start circuit, and a control method, said power supply system comprising: a first terminal of a bus capacitor is connected to a first terminal of a power supply, and a second terminal of the bus capacitor is connected to a second terminal of a semiconductor switch device (100); a first terminal of the semiconductor switch device (100) is connected to a second terminal of the power supply; an input terminal of a power conversion circuit (500) is connected to the bus capacitor; the two terminals of a resistor (200) are connected to the first terminal and second terminal of the semiconductor switch device (100), respectively; the power supply supplies power to the bus capacitor by means of the resistor (200) when the semiconductor switch device (100) is disconnected; if the voltage on the bus capacitor is greater than a first preset voltage, an auxiliary power supply (400) is powered on, and the semiconductor switch device (100) is disconnected; if the voltage on the bus capacitor is greater than a second preset voltage, a controller (300) controls the semiconductor switch device (100) to close, the second preset voltage being greater than the first preset voltage; after the semiconductor switch device (100) is closed, the power supply supplies power to the bus capacitor by means of the semiconductor switch device (100). The solution facilitates the selection of a smaller semiconductor switch device, reducing the size of the entire slow-start circuit, thus reducing the size of the power supply system.
Inventors:
SONG WEIPING (CN)
WANG JINLONG (CN)
ZHANG ZHONGSHU (CN)
LIU LING (CN)
WANG JINLONG (CN)
ZHANG ZHONGSHU (CN)
LIU LING (CN)
Application Number:
PCT/CN2021/103594
Publication Date:
May 27, 2022
Filing Date:
June 30, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J1/08; H02M1/36
Foreign References:
| CN210490824U | 2020-05-08 | |||
| CN112564078A | 2021-03-26 | |||
| CN110729880A | 2020-01-24 | |||
| US10771049B1 | 2020-09-08 | |||
| CN202011293892A | 2020-11-18 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
Download PDF:
Previous Patent: BOOM DEVICE AND OPERATION VEHICLE
Next Patent: EVENT DETECTION METHOD, APPARATUS, ELECTRONIC DEVICE, AND STORAGE MEDIUM
Next Patent: EVENT DETECTION METHOD, APPARATUS, ELECTRONIC DEVICE, AND STORAGE MEDIUM