Title:
DCDC ARCHITECTURE SUITABLE FOR DIFFERENT INPUT POWER GRIDS AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/227231
Kind Code:
A1
Abstract:
Disclosed are a DCDC architecture suitable for different input power grids and a control method therefor. The DCDC architecture comprises a primary conversion module, a first transformer T1, a secondary conversion module, a controller, a second transformer T2 and a secondary rectification module, wherein a primary winding W5 of the second transformer T2 is connected in series to a primary winding W1 of the first transformer T1 and is then connected to an output end of the primary conversion module; a secondary winding W6 of the second transformer T2 is connected to an input end of the secondary rectification module; an output end of the secondary rectification module is connected in parallel to an output end of the secondary conversion module; a primary side or a secondary side of the second transformer T2 is provided with a changeover switch K; and according to a bus voltage of the primary conversion module, the controller controls the changeover switch K to put the second transformer T2 and the secondary rectification module into operation or to make same exit operation. By means of the present invention, the problem of rear-stage DCDC multi-channel parallel current sharing of a high-power on-board charger (OBC) and the problem of single-phase and three-phase input voltages being compatible are solved; and the present invention has the advantages of a small number of devices, implementation thereof being simple and easy, etc.
Inventors:
LIU JUN (CN)
FENG YINGYING (CN)
YAO SHUN (CN)
XU JINZHU (CN)
ZHANG YUANZHAO (CN)
FENG YINGYING (CN)
YAO SHUN (CN)
XU JINZHU (CN)
ZHANG YUANZHAO (CN)
Application Number:
PCT/CN2020/101136
Publication Date:
November 18, 2021
Filing Date:
July 09, 2020
Export Citation:
Assignee:
SHENZHEN VMAX NEW ENERGY CO LTD (CN)
International Classes:
H02M3/44
Foreign References:
| CN108122664A | 2018-06-05 | |||
| CN105450030A | 2016-03-30 | |||
| CN109245593A | 2019-01-18 | |||
| CN102299638A | 2011-12-28 | |||
| CN106329940A | 2017-01-11 | |||
| CN102299650A | 2011-12-28 | |||
| US20110075464A1 | 2011-03-31 |
Attorney, Agent or Firm:
SHENZHEN KANGHONG INTELLECTUAL PROPERTY AGENT CO., LTD. (CN)
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