Asustek Computer Inc.

Ke-Jen Hung

Yu-Cheng Shen

Yu-Hsiu Su

A battery module with a battery housing includes a first conducting layer, at least one battery cell, a second conducting layer, an insulating layer, and a detecting circuit. The first conducting layer is disposed inside the battery housing. The battery cell is disposed inside the battery housing and opposite to the first conducting layer. The second conducting layer is disposed on the battery cell. The insulating layer is disposed between the first conducting layer and the second conducting layer. The first conducting layer, the second conducting layer, and the insulating layer form an internal capacitor. The detecting circuit is electrically connected with the first conducting layer and the second conducting layer for detecting a capacitance value of the internal capacitor.

Battery module and detecting method thereof

A battery module and an overcharge protecting method are provided. The overcharge protecting method includes following steps: detecting a battery voltage of a rechargeable battery during a charging process; determining whether the battery voltage is larger than or equals to an upper limit voltage; if no, continuously charging the rechargeable battery until the battery voltage reaches a charging cut-off voltage and then the charging process is ended; if yes, stopping the charging process, reducing the value of the charging cut-off voltage and using the reduced charging cut-off voltage as the charging cut-off voltage in the next charging process. In the subsequent charging process, once the overcharge occurs, the value of the charging cut-off voltage is continuously reduced until the overcharge of the rechargeable battery does not occur during the charging process.

Growing community of inventors

Taipei, Taiwan

Ke-Jen Hung