Title:
THREE-LEVEL BIDIRECTIONAL DC/DC CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/184442
Kind Code:
A1
Abstract:
A three-level bidirectional DC/DC circuit, comprising an MOSFET tube M1, an MOSFET tube M2, an MOSFET tube M3, an MOSFET tube M4, a flying capacitor (CF), a diode (D1), and an inductor (L1). A drain of the MOSFET tube M1 is connected to a positive electrode of a battery; a drain of the MOSFET tube M2 is connected to a source of the MOSFET tube M1; a source of the MOSFET tube M2 is connected to a negative electrode of the battery; a source of the MOSFET tube M3 is connected to the drain of the MOSFET tube M1; a source of the MOSFET tube M4 is connected to a drain of the MOSFET tube M3; a drain of the MOSFET tube M4 is connected to one end of a direct-current bus; one end of the flying capacitor (CF) is connected to the drain of the MOSFET tube M3; the other end of the flying capacitor (CF) is connected to the source of the MOSFET tube M1; the source of the MOSFET tube M1 is connected to a middle point of the direct current bus by means of the inductor (L1) and the diode (D1); the other end of the direct current bus is connected to the source of the MOSFET tube M2. By using a low-voltage grade MOSFET to place a high-voltage grade MOSFET, the disadvantage of the poor performance parameters of the high-voltage MOSFET device is overcome; switching loss of a switch tube can be reduced; and the switch tube can be prevented from being damaged.
Inventors:
XIANG JUN (CN)
HUANG MIN (CN)
FANG GANG (CN)
LU JINJUN (CN)
LIU TAO (CN)
HUANG MIN (CN)
FANG GANG (CN)
LU JINJUN (CN)
LIU TAO (CN)
Application Number:
PCT/CN2018/120060
Publication Date:
October 03, 2019
Filing Date:
December 10, 2018
Export Citation:
Assignee:
JIANGSU GOODWE POWER SUPPLY TECH CO LTD (CN)
International Classes:
H02M3/158
Foreign References:
| CN108471235A | 2018-08-31 | |||
| CN107104597A | 2017-08-29 | |||
| CN106655853A | 2017-05-10 | |||
| CN105262339A | 2016-01-20 | |||
| CN106452146A | 2017-02-22 | |||
| CN206237307U | 2017-06-09 | |||
| US20170012452A1 | 2017-01-12 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD (CN)
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