INTEGRATED DC/DC CONVERTER AND ELECTROCHEMICAL ENERGY STORAGE SYSTEM AS WELL AS ALTERNATING-CURRENT IMPEDANCE ANALYTICAL METHOD FOR ELECTROCHEMICAL ENERGY STORAGE DEVICE AND ANALYTICAL METHOD FOR WORKING STATE OF ELECTROCHEMICAL ENERGY STORAGE DEVICE

Title:

Document Type and Number:

WIPO Patent Application WO/2016/019744

Kind Code:

A1

Abstract:

An integrated DC/DC converter (200) comprises: a first DC/DC converter (202), a second DC/DC converter (204), a first voltage transducer (206), a second voltage transducer (208), a first current transducer (210), a second current transducer (212), a third current transducer (214) and a controller (218). The first DC/DC converter is in parallel connection with the second DC/DC converter; and the controller controls ON or OFF of the second DC/DC converter, and controls the second DC/DC converter to regulate and control a current at an output end of an electrochemical energy storage device (22) in a current disturbance manner in the case where the second DC/DC converter is in the ON state, so as to obtain an electrochemical alternating-current impedance spectrum of the electrochemical energy storage device. Also provided are an alternating-current impedance analytical method for an electrochemical energy storage device and an analytical method for a working state of the electrochemical energy storage device.

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Inventors:

HONG PO (CN)
LI JIANQIU (CN)
XU LIANGFEI (CN)
OUYANG MINGGAO (CN)

Application Number:

PCT/CN2015/078178

Publication Date:

February 11, 2016

Filing Date:

May 04, 2015

Export Citation:

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Assignee:

UNIV TSINGHUA (CN)

International Classes:

H02M3/00; G01R31/00; G01R31/36; H01M8/04

Foreign References:

CN104158397A	2014-11-19
CN104155611A	2014-11-19
US20100286939A1	2010-11-11
CN1930718A	2007-03-14

Attorney, Agent or Firm:

SHENZHEN DINGYAN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
深圳市鼎言知识产权代理有限公司 (CN)

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