US 11,909,009 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)
Appl. No. 17/420,161
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Mar. 17, 2020, PCT No. PCT/KR2020/003652
§ 371(c)(1), (2) Date Jul. 1, 2021,
PCT Pub. No. WO2020/190009, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 10-2019-0031403 (KR), filed on Mar. 19, 2019.
Prior Publication US 2022/0093979 A1, Mar. 24, 2022
Int. Cl. H01M 10/42 (2006.01); G01R 31/385 (2019.01); G01R 31/36 (2020.01); H02J 7/00 (2006.01); G01R 31/3842 (2019.01); H01M 10/48 (2006.01)
CPC H01M 10/4285 (2013.01) [G01R 31/3648 (2013.01); G01R 31/385 (2019.01); G01R 31/3842 (2019.01); H01M 10/48 (2013.01); H02J 7/0029 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A battery safety test device, comprising:
an electronic switching 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 switching element,
wherein the electronic switching 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 switching element are turned on; and
a current sensor configured to measure a current of the battery after the mechanical switch element and the electronic switching element are turned on;
a waveform calculator configured to calculate a voltage and current waveform 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;
a reader configured to determine a safety of the battery using the voltage and current waveforms calculated by the waveform calculator; and
a variable resistor connected directed to either the battery positive electrode or the battery negative electrode and connected directly between the battery and the electronic switching element.