Title:
ACTIVE EQUALIZATION CIRCUIT, BATTERY MANAGEMENT SYSTEM, POWER SOURCE SYSTEM, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/186496
Kind Code:
A1
Abstract:
Provided in embodiments of the present description are an active equalization circuit, a battery management system, a power source system, and an electronic device; the active equalization circuit comprises: a plurality of switch transistors, a drive transformer, a multi-port converter, a buck converter, and a micro-controller. Each switch transistor is coupled in one-to-one correspondence to a battery cell in a battery pack in series connection; the multi-port converter comprises an equalization transformer and a bridge converter, each secondary winding of the bridge converter being coupled to a plurality of corresponding battery cells; an input terminal of the buck converter is coupled to an output terminal of the battery pack in series connection, and an output terminal of the buck converter is coupled to an input terminal of the bridge converter; the micro-controller is used to output a first control signal to the buck converter such that the buck converter performs voltage transform on the output of the battery pack in series connection, then outputs same to the bridge converter; and the micro-controller is used to output a second control signal to the bridge converter so as to control the operating state of the bridge converter. The embodiments of the present description can reduce the costs and volume of an active equalization circuit.
Inventors:
MI CHUNTING CHRIS (US)
HU PANPAN (CN)
SHANG YUNLONG (CN)
HAN BING (CN)
FU YUHONG (US)
HU XIAOHONG (CN)
WU DINGGUO (CN)
HU PANPAN (CN)
SHANG YUNLONG (CN)
HAN BING (CN)
FU YUHONG (US)
HU XIAOHONG (CN)
WU DINGGUO (CN)
Application Number:
PCT/CN2019/078967
Publication Date:
September 24, 2020
Filing Date:
March 21, 2019
Export Citation:
Assignee:
HEFEI GUOXUAN HIGH TECH POWER ENERGY CO LTD (CN)
SAN DIEGO STATE UNIV (US)
SAN DIEGO STATE UNIV (US)
International Classes:
H02J7/00
Foreign References:
| CN205092599U | 2016-03-16 | |||
| CN105762895A | 2016-07-13 | |||
| JP2013162661A | 2013-08-19 |
Other References:
See also references of EP 3944452A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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