Title page for etd-0721118-123357


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URN etd-0721118-123357
Author You-chun Huang
Author's Email Address No Public.
Statistics This thesis had been viewed 5563 times. Download 66 times.
Department Electrical Engineering
Year 2017
Semester 2
Degree Master
Type of Document
Language English
Title Charging/discharging circuit for battery test system
Date of Defense 2018-07-27
Page Count 53
Keyword
  • Formatting
  • Flyback converter
  • Bridge-type buck-boost converter
  • Grading
  • Battery test system
  • Abstract In the conventional battery test system, charging and discharging currents go through several stages of AC-to-DC and DC-to-DC power converters causing power conversion losses during formatting and grading processes. An H-bridge converter is interleaved between two tested batteries, which are paired up to counterbalance the charging and discharging powers by properly arranging the manufacturing schedule. To cope with the designated formatting and grading profiles, each battery is attached by a bidirectional flyback converter to complement the insufficient current into or remove the excessive current from the tested battery. A great amount of energy can be saved in battery production for a battery test system with fewer power conversion stages and less power transfer between the tested batteries and the DC-bus. Experiments on two pair-up batteries with the proposed charging/discharging circuit are conducted to accomplish the profiles of constant-current discharging and constant-current constant-voltage charging. Experimental results demonstrate that the power losses can be effectively reduced by 50 % during the grading process as compared with that of the conventional battery test system.
    Advisory Committee
  • Yong-Nong Chang - chair
  • Shiang-Hwua Yu - co-chair
  • Yao-Ching Hsieh - co-chair
  • Chin-Sien Moo - advisor
  • Files
  • etd-0721118-123357.pdf
  • indicate access worldwide
    Date of Submission 2018-08-24

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