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Title:
DIRECT CURRENT-DIRECT CURRENT CONVERTER, BOOSTING UNIT, ELECTRIC CAR, AND BATTERY-BACKUP SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/024052
Kind Code:
A1
Abstract:
Provided are a boosting unit (610, 1010, 1020, 1310-13n0) and a direct current-direct current (DC-DC) converter (600, 1000, 1300) having the same, an electric car, and a battery-backup system. The DC-DC converter comprises: a switch (S1) connected to an input voltage (Ui); a main diode (VD5) connected to the switch; a voltage stabilization capacitor (C0), a first terminal thereof and the main diode being connected in series and a second terminal thereof being connected to the input voltage, and the first terminal and the second terminal of the voltage stabilization capacitor being output terminals of the DC-DC converter; and a boosting unit having an input terminal connected to the switch to receive the input voltage and an output terminal connected to the second terminal of the voltage stabilization capacitor. The boosting unit comprises a first inductor (L1, L11-Ln1), a second inductor (L2, L12-Ln2), a boosting capacitor (C1-Cn), a first unilateral conducting device (VD1, VD11-VDn1), a second unilateral conducting device (VD2, VD12-VDn2), a third unilateral conducting device (VD3, VD13-VDn3), and a fourth unilateral conducting device (VD4, VD14-VDn4). The invention replaces an inductor in a general DC-DC converter with a boosting unit, thereby increasing a voltage gain.

Inventors:
GUAN, Enhui (No. 9 Dize Rd, BDA, Beijing 6, 100176, CN)
OKAMURA, Masakazu (No. 9 Dize Rd, BDA, Beijing 6, 100176, CN)
CHEN, Shuo (No. 9 Dize Rd, BDA, Beijing 6, 100176, CN)
Application Number:
CN2017/090619
Publication Date:
February 08, 2018
Filing Date:
June 28, 2017
Export Citation:
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Assignee:
BOE TECHNOLOGY GROUP CO., LTD. (No. 10 Jiuxianqiao Rd, Chaoyang District, Beijing 5, 100015, CN)
International Classes:
H02M3/156
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (10th Floor, Building 110 Caihefang Road, Haidian District, Beijing 0, 100080, CN)
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