US 11,982,720 B2
Method and battery management system for ascertaining a state of health of a secondary battery
Christoph Hametner, Vienna (AT); Stefan Jakubek, Vienna (AT); and Markus Dohr, Graz (AT)
Assigned to AVL LIST GMBH, Graz (AT)
Appl. No. 17/272,239
Filed by AVL LIST GMBH, Graz (AT)
PCT Filed Aug. 28, 2019, PCT No. PCT/AT2019/060279
§ 371(c)(1), (2) Date Feb. 26, 2021,
PCT Pub. No. WO2020/041814, PCT Pub. Date May 5, 2020.
Claims priority of application No. 50744/2018 (AT), filed on Aug. 31, 2018.
Prior Publication US 2021/0181263 A1, Jun. 17, 2021
Int. Cl. G01R 31/392 (2019.01); G01R 31/367 (2019.01); G01R 31/374 (2019.01)
CPC G01R 31/392 (2019.01) [G01R 31/367 (2019.01); G01R 31/374 (2019.01)] 9 Claims
OG exemplary drawing
 
7. Battery management system for controlling the operation of a secondary battery, the battery management system comprising:
an observer configured and arranged to ascertain a first estimation of a state of health of the secondary battery,
an aging prediction model with parameters configured and arranged to ascertain a second estimation for the state of health and
wherein in the battery management system, the operation of the secondary battery is controlled using either the first estimation of the state of health or the second estimation of the state of health or using a combination of the first and second estimation of the state of health ascertained with a computing unit in the battery management system as the state of health of the secondary battery characterized in that the computing unit parameterizes the aging prediction model on the basis of the first estimation of the state of health, wherein the parameters of the aging prediction model are updated based on the first estimation for the state of health.