公开(公告)号：US20180323481A1

公开(公告)日：2018-11-08

申请号：US15912222

申请日：2018-03-05

Applicant: CHROMA ATE INC.

Inventor： Chih-Ming TSAI ,  Chao-Hsu CHEN ,  Han-Chou LIAO ,  Chung-Yu SIANG

IPC: H01M10/48 ,  H01M10/44 ,  G01R19/165 ,  H01M10/42

Abstract: A method is provided for testing a semi-finished battery cell. The semi-finished battery cell is charged with a constant current when a voltage difference between the first conductor and the second conductor is less than a voltage threshold. The semi-finished battery cell is charged with a constant voltage when the voltage difference between the first conductor and the second conductor is equal to or larger than the voltage threshold. An overall electric quantity is obtained after a default time period, wherein the overall electric quantity is an electric quantity charged to the semi-finished battery cell with the constant current during the default time period. Accordingly, an insulation related to electrodes of the semi-finished battery cell is determined as poor when the overall electric quantity is larger than an electric quantity threshold.

公开(公告)号：US20180031637A1

公开(公告)日：2018-02-01

申请号：US15598108

申请日：2017-05-17

Applicant: CHROMA ATE INC.

Inventor： Chih-Ming TSAI

IPC: G01R31/36 ,  H01M10/48

CPC classification number: G01R31/386 ,  G01R31/3648 ,  G01R31/385 ,  H01M10/4285 ,  H01M10/48

Abstract: A battery testing device includes a power supply, a voltmeter, a galvanometer, a differential circuit and an analyzer. The power supply is configured to provide a constant-current signal or a constant-voltage signal to a subject battery. The voltmeter is configured to detect a voltage waveform generated by the subject battery when the power supply provides the constant-current signal to the subject battery. When a voltage value of the voltage waveform achieves a threshold voltage value, the power supply switches to provide the constant-voltage signal to the subject battery. The galvanometer is configured to detect a current waveform generated by the subject battery. The differential circuit processes the voltage waveform and the current waveform by a second-order differential. The analyzer determines a testing result of the subject battery according to the processed voltage waveform and the processed current waveform.