Ablerex Electronics Co., Ltd.

Kuen-Der Wu

Ya-Tsung Feng

Chin-Chang Wu

Hung-Liang Chou

Ming-Hsun Hsieh

Yu-Hua Sun

Chang-Chu Wu

Hung-Yuan Tai

Jie-Tin Lee

A battery-charging device, having a maximum power point tracking (MPPT) function, for a stand-alone generator system includes a DC/DC power converter and a control circuit used to control the DC/DC power converter. The method applied in the device includes: performing a MPPT function to supply a continuous current when the electric power generated from the electrical power source of the stand-alone generator system is low; operating a pulse charging function and continuing the MPPT function when the electric power generated from the electrical power source of the stand-alone generator system is high and not greater than the summation of the load power and a maximum charging power of the pulse charging method for the battery; terminating the MPPT function while the electric power is greater than the summation of the load power and the maximum charging power of the pulse charging method for the battery; and operating a constant-voltage charging mode when the battery voltage is greater than a predetermined constant charging voltage.

Battery-charging device for a stand-alone generator system having a MPPT function and method thereof

A diagnosis method for SOH of batteries includes the steps of: providing data of discharge voltages and currents of a battery unit; setting an acceptable value of a predetermined period of time and an acceptable range of variation rate of discharge current for the battery unit; calculating variation rates of discharge voltages and currents of the battery unit within the predetermined period of time by using the data of discharge voltages and currents; recording the data of discharge voltages and currents of the batteries and variation rates thereof; comparing the data of discharge voltages of the batteries and the variation rates thereof if the variation rates of discharge current are fallen within the acceptable range of current variation with selected reference data; and converting results of compared data of discharge voltages of the battery unit and the variation rates thereof into a SOH index.

Diagnosis method for state-of-health of batteries

Growing community of inventors

Kaohsiung, Taiwan

Kuen-Der Wu