US 12,032,027 B2
Method and apparatus for determining and fusing an aging state trajectory of an electrical energy storage unit based on statistical, model-based, and machine-learning methods
Christian Simonis, Leonberg (DE); and Stefan Schindler, Bietigheim-Bissingen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Sep. 10, 2021, as Appl. No. 17/472,441.
Claims priority of application No. 10 2020 212 283.0 (DE), filed on Sep. 29, 2020.
Prior Publication US 2022/0099742 A1, Mar. 31, 2022
Int. Cl. G01R 31/36 (2020.01); G01R 31/367 (2019.01); G01R 31/392 (2019.01); H02J 7/00 (2006.01)
CPC G01R 31/367 (2019.01) [G01R 31/392 (2019.01); H02J 7/005 (2020.01); H02J 7/0069 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A method for determining a trajectory function to represent an aging state trajectory for at least one electrical energy storage unit of one or more devices, comprising:
determining a plurality of uncertainty-containing model values of aging states of the at least one electrical energy storage unit by applying an aging state model;
determining a state uncertainty value for each of the determined model values of the plurality of uncertainty-containing model values using the aging state model;
determining error-containing model values of the determined plurality of uncertainty-containing model values;
cleaning the determined plurality of uncertainty-containing model values based on the determined error-containing model values and the corresponding state uncertainty values to determine a plurality of cleaned model values, in which some of the model values of the plurality of uncertainty-containing are eliminated from the plurality of uncertainty-containing model values;
storing the eliminated model values in a central unit;
determining the aging state trajectory based on the determined plurality of cleaned model values and the determined plurality of uncertainty-containing model values;
determining the trajectory function based on the determined aging state trajectory;
determining a residual lifetime of the at least one energy storage unit based on the determined trajectory function; and
executing the method repeatedly,
wherein the cleaning of the determined plurality of uncertainty-containing model values is always based on all of the uncertainty-containing model values of the determined plurality of uncertainty-containing model values of aging states of the at least one electrical energy storage unit including the eliminated model values stored in the central unit.