US 12,134,336 B2
System method for battery diagnosis according to altitude using atmospheric pressure sensor
Doo Jin Park, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 18/021,960
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Nov. 5, 2021, PCT No. PCT/KR2021/016083
§ 371(c)(1), (2) Date Feb. 17, 2023,
PCT Pub. No. WO2022/098181, PCT Pub. Date May 12, 2022.
Claims priority of application No. 10-2020-0148733 (KR), filed on Nov. 9, 2020.
Prior Publication US 2023/0391224 A1, Dec. 7, 2023
Int. Cl. B60L 58/10 (2019.01); G01C 5/06 (2006.01); G01R 31/367 (2019.01); G01R 31/3842 (2019.01)
CPC B60L 58/10 (2019.02) [G01C 5/06 (2013.01); G01R 31/367 (2019.01); G01R 31/3842 (2019.01)] 10 Claims
OG exemplary drawing
 
1. A system for diagnosing a state of a battery pack according to altitude, the system comprising:
a battery pack including at least two battery cells connected in series/parallel;
a barometric pressure sensor mounted at any one position of the battery pack to measure an external atmospheric pressure state at regular intervals;
an altitude information calculation unit configured to calculate altitude information using an atmospheric pressure measurement value input from the barometric pressure sensor;
a first storage unit configured to store a lookup table including diagnostic level information corresponding to each of a plurality of atmospheric pressure sections;
a second storage unit configured to store predetermined diagnostic reference range data corresponding to each diagnostic level information;
a diagnostic level extraction unit configured to extract a diagnostic level corresponding to a current altitude value calculated by the altitude information calculation unit from the lookup table stored in the first storage unit; and
a diagnostic unit configured to diagnose a current state of the battery pack by applying predetermined diagnostic reference range data corresponding to the diagnostic level extracted from the diagnostic level extraction unit among the diagnostic reference range data stored in the second storage unit.