National Cheng-kung University

Cheng Kung University

Yi-Hsun Hsieh

Tsorng-Juu Liang

Jiann-Fuh Chen

Yi-Yuan Chung

Kuan-Wen Lee

Wan-Yi Horng

Yi-Chien Shen

Battery equalization circuits for series charging/discharging and controlling methods thereof are provided. The provided circuit includes a set of series-connected batteries, a switching converter and a magnetic element coupled balance circuit including a magnetic element coupled to the switching converter, wherein the magnetic element takes a branch current from the switching converter to the series-connected batteries so as to cause the set of series-connected batteries to reach a balance.

Battery equalization circuits for series charging/discharging and controlling methods thereof

An AC/DC converter is disclosed. The proposed AC/DC converter generates an output voltage and includes a current ripple eliminator having an input terminal, an energy storage capacitor and an output terminal, wherein the input terminal has an input voltage, the output terminal generates a pure AC component of a voltage feedback signal based on the output voltage, when the input voltage is larger than a first reference voltage, the energy storage capacitor stores a difference between the input voltage and the first reference voltage as an electric energy, otherwise, the energy storage capacitor releases the electric energy to the input voltage, and an operational amplifier operating the AC component and a second reference voltage to determine when the storage capacitor should store or release the electric energy to minimize a ripple of an output power thereof.

Electrolytic capacitor-less AC/DC converter and controlling method thereof

Growing community of inventors

Tainan, Taiwan

Yi-Hsun Hsieh