Title:
CHARGER
Document Type and Number:
WIPO Patent Application WO/2022/143497
Kind Code:
A1
Abstract:
Disclosed is a charger, comprising: a power input terminal, a power output terminal, a switching module, and a transformer. A primary side of the transformer is provided with a power input module. The power input module is connected to the power input terminal by means of the switching module. A secondary winding of the transformer is connected to the power output terminal. The switching module can switch among a first conduction state, a second conduction state, and a third conduction state. When an output voltage corresponding to the power output terminal is within the range of a first voltage V1 to a second voltage V2, the switching module switches between the first conduction state and the second conduction state, and the power input module works in a resonant mode; when the output voltage corresponding to the power output terminal is within the range of a third voltage V3 to a fourth voltage V4, the switching module is in the third conduction state, and the power input module works in a flyback mode, V1 being greater than V3, and V2 being greater than V4.
Inventors:
LI DAHUAN (CN)
Application Number:
PCT/CN2021/141519
Publication Date:
July 07, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
VIVO MOBILE COMMUNICATION CO LTD (CN)
International Classes:
H02M3/335
Foreign References:
| CN112821483A | 2021-05-18 | |||
| CN112821482A | 2021-05-18 | |||
| CN106469983A | 2017-03-01 | |||
| CN111130353A | 2020-05-08 | |||
| CN107947587A | 2018-04-20 | |||
| CN111251916A | 2020-06-09 | |||
| US20150349627A1 | 2015-12-03 | |||
| CN103887976A | 2014-06-25 |
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
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