US 12,206,077 B2
Battery safety test device and method
Won Hyeok Lee, Daejeon (KR); Hyung Jin Hwang, Daejeon (KR); Seong Ha Cha, Daejeon (KR); Ui Yong Jeong, Daejeon (KR); and In Cheol Shin, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Dec. 29, 2023, as Appl. No. 18/400,487.
Application 18/400,487 is a continuation of application No. 17/420,161, granted, now 11,909,009, previously published as PCT/KR2020/003652, filed on Mar. 17, 2020.
Claims priority of application No. 10-2019-0031403 (KR), filed on Mar. 19, 2019.
Prior Publication US 2024/0136604 A1, Apr. 25, 2024
Prior Publication US 2024/0234839 A9, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/42 (2006.01); G01R 31/36 (2020.01); G01R 31/3842 (2019.01); G01R 31/385 (2019.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01)
CPC H01M 10/4285 (2013.01) [G01R 31/3648 (2013.01); G01R 31/3842 (2019.01); G01R 31/385 (2019.01); H01M 10/48 (2013.01); H02J 7/0029 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A battery safety test device, comprising:
an electronic switch element;
a mechanical switch element having a first end connected to either a battery positive electrode or a battery negative electrode and a second end connected to the electronic switch element;
wherein the electronic switch element has a first end connected to the mechanical switch element and a second end connected to the other of the battery positive electrode or the battery negative electrode;
a voltage sensor configured to measure a voltage of the battery after the mechanical switch element and the electronic switch element are turned on;
a current sensor configured to measure a current of the battery after the mechanical switch element and the electronic switch element are turned on;
a waveform calculator configured to calculate a voltage and current waveforms of the battery using values measured by the voltage sensor and the current sensor after the mechanical switch element and the electronic switch element are turned on; and
a reader configured to determine that the battery is short-circuited when the calculated current waveform has a distorted peak portion.