Granted Patent B2

US 12,613,283 · App. 17/659,424 · Granted Apr 28, 2026

Inventors: Christian Simonis (Leonberg, DE); Christoph Kroener (Freiberg am Neckar, DE)

Assignee: Robert Bosch GmbH

G01R31/392G01R31/367

Abstract

Claims (18)

1 . A computer-implemented method for providing an electrochemical battery model and a state of health model for a device battery, the method comprising:

providing a physical aging model, included in the state of health model, with a model input including progressions of operating parameters characterizing an operation of the device battery;

outputting from the physical aging model to an adaptation block, a state of health of the device battery based on the provided model input;

establishing an internal state of a system of differential equations of the physical aging model corresponding to a physical internal state of the device battery based on the provided model input;

providing the electrochemical battery model with the model input;

outputting from the electrochemical battery model to the adaptation block (i) a state of charge of the device battery based on the model input, (ii) stress factors for the device battery based on the model input, and (iii) a charge strategy comprising an optimized charge curve based on the model input;

establishing another system of differential equations of the electrochemical battery model corresponding to an internal equilibrium state of the device battery;

determining using the adaptation block (i) when a change in the outputted state of health is greater than a predetermined change amount, and (ii) when the change in the outputted state of health is less than the predetermined change amount;

when the change in the outputted state of health is less than the predetermined change amount, operating the device battery based on at least one of (i) the outputted state of health, (ii) the outputted state of charge, (iii) the outputted stress factors, and (iv) the outputted charge strategy;

when the change in the outputted state of health is greater than the predetermined change amount (i) updating the electrochemical battery model by adapting at least one model parameter of the electrochemical battery model depending on the established internal state of the system of differential equations of the physical aging model using the adaptation block, and (ii) updating the physical aging model by adapting the established internal state of the system of differential equations of the physical aging model based on the at least one model parameter of the electrochemical battery model using the adaptation block;

outputting from the updated physical aging model an updated state of health of the device battery based on the provided model input;

outputting from the updated electrochemical battery model (i) an updated state of charge of the device battery, (ii) updated stress factors for the device battery, and (iii) an updated charge strategy comprising an updated optimized charge curve;

using the device battery based on the output of the updated electrochemical battery model and/or the output of the updated physical aging model for supplying electrical energy to a device such as a motor vehicle, a pedelec, a flying device including a drone, a machine tool, a consumer electronics device including a cellphone, an autonomous robot, or a domestic appliance; and

charging the device battery based on the updated charge strategy, wherein, in order to prolong a lifetime of the device battery, the updated charge strategy minimizes the stress factors for the device battery.

2 . The method according to claim 1 , wherein the established internal state of the system of differential equations of the physical aging model corresponds to a loss of cyclable lithium of the device battery or a loss of active anode material of an anode of the device battery.

3 . The method according to claim 1 , wherein the at least one model parameter of the electrochemical battery model comprises a parameter of cyclable lithium standardized to a cathode capacity of a cathode of the device battery or a proportion of an anode volume of an anode of the device battery.

4 . The method according to claim 1 , wherein the adapting the at least one model parameter of the electrochemical battery model and/or the adapting the established internal state of the system of differential equations of the physical aging model using the adaptation block includes amalgamating the established internal state and the at least one adapted model parameter of the electrochemical battery model using a maximum likelihood estimator.

5 . The method according to claim 1 , wherein the at least one model parameter of the electrochemical battery model characterizes physical and/or chemical relationships of the device battery that are not measurable directly.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (13)