US 12,111,364 B2
Apparatus for and method of non-destructive-type diagnosis of degree of battery degradation
Chun Yong Kang, Yongin-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Aug. 23, 2022, as Appl. No. 17/893,487.
Claims priority of application No. 10-2022-0012461 (KR), filed on Jan. 27, 2022.
Prior Publication US 2023/0236260 A1, Jul. 27, 2023
Int. Cl. G01R 31/392 (2019.01); G01J 5/00 (2022.01); G01R 31/374 (2019.01); G01R 31/389 (2019.01); H02J 7/00 (2006.01)
CPC G01R 31/392 (2019.01) [G01J 5/00 (2013.01); G01R 31/374 (2019.01); G01R 31/389 (2019.01); H02J 7/005 (2020.01); G01J 2005/0077 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus for non-destructive-type diagnosis of a degree of degradation of a battery, the apparatus comprising:
a chamber inside which a battery subject to inspection is arranged;
a charging and discharging unit connected to a lead portion of the battery and configured to charge or discharge the battery;
a thermoelectric element module thermally connected to the battery inside the chamber and configured to generate an electromotive force caused by heat generated by charging and discharging the battery;
a first measurement unit configured to measure the electromotive force generated by the thermoelectric element module;
a second measurement unit configured to measure a change in impedance due to the charging and discharging of the battery; and
a determination unit configured to compare data on the electromotive force of the battery, the electromotive force being measured by the first measurement unit, and data on the impedance of the battery, the impedance being measured by the second measurement unit, with pre-prepared comparative data and determining a degree of degradation of the battery,
wherein the thermoelectric element modules are combined with the battery in such a manner that respective inside surfaces of the thermoelectric element modules are brought into surface contact with both lateral surfaces, respectively, of the battery and thus the electromotive force is generated at the both lateral surfaces of the battery at the same time.