Charging/discharging circuit for battery test system
| Autor: | You-chun Huang, 黃宥鈞 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 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. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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