Method for predicting an aging state of a battery

Patent metadata

Field	Value
Publication number	US-12000895-B2
Application number	US-202017630087-A
Country	US
Kind code	B2
Filing date	Oct 29, 2020
Priority date	Nov 8, 2019
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

A method for predicting an aging state of a battery. A vehicle is also provided that includes at least one battery, the aging state of which is predited using the method and/or the aging behavior of which is improved based on the aging state prediction. A prediction system that is configured to carry out the method is also provided.

First claim

What is claimed is:

1. A method for predicting an aging state of a battery, the method comprising:
providing data of the battery as a function of various usage profiles of the battery;
transmitting the data of the battery to a memory device in which data from multiple comparison batteries are stored, processed, and analyzed;
determining aging state values of the battery at defined times and/or for defined events using a battery reference model;
forming an aging state pattern of the battery based on the determined aging state values; and
determining a predicted aging state value and/or a predicted aging state pattern of the battery: (i) by extrapolating the aging state pattern that is formed, and (ii) by associating the formed aging state pattern with an ascertained aging state pattern from the data of the comparison batteries stored in the memory device, multiple aging state patterns being ascertained from the data stored in the memory device.

2. The method as recited in claim 1 , wherein the battery reference model is an artificial intelligence-based model.

3. The method as recited in claim 1 , wherein the battery reference model is compared based on the data of the comparison batteries stored in the memory device.

4. The method as recited in claim 1 , wherein the aging state values of the battery are determined for various prediction horizons.

5. The method as recited in claim 1 , wherein the data of the battery are transmitted to the memory device using a wireless network.

6. The method as recited in claim 1 , wherein the memory device is a cloud memory.

7. The method as recited in claim 1 , wherein the data of the battery transmitted to the memory device are continuously monitored and assessed.

8. The method as recited in claim 1 , wherein the data of the battery and of the comparison batteries stored in the memory device are continuously verified and assessed.

9. The method as recited in claim 1 , wherein a load pattern is learned individually by a driver based on historical loads and utility patterns, and is then parameterized as a load prediction, including a current profile or a temperature profile.

10. The method as recited in claim 9 , wherein the load prediction is input to the reference model to obtain a model-based SOH prediction, wherein the SOH prediction in the fusion module is merged with another SOH prediction from a data-driven fleet model.

11. The method as recited in claim 10 , wherein there is a weighting of the two predictions, so as to provide a merged prediction.

12. A vehicle, comprising:
a device; and
at least one battery, wherein an aging state of which is predicted and/or an aging behavior of which is improved based on the predicted aging state, wherein the aging state is predicted by the device;
wherein the device is configured to perform the following:
providing data of the battery as a function of various usage profiles of the battery;
transmitting the data of the battery to a memory device in which data from multiple comparison batteries are stored, processed, and analyzed;
determining aging state values of the battery at defined times and/or for defined events using a battery reference model;
forming an aging state pattern of the battery based on the determined aging state values; and
determining a predicted aging state value and/or a predicted aging state pattern of the battery: (i) by extrapolating the aging state pattern that is formed, and (ii) by associating the formed aging state pattern with an ascertained aging state pattern from the data of the comparison batteries stored in the memory device, multiple aging state patterns being ascertained from the data stored in the memory device.

13. A prediction apparatus to predict an aging state of a battery, comprising:
a prediction system configured to perform the following:
providing data of the battery as a function of various usage profiles of the battery;
transmitting the data of the battery to a memory device in which data from multiple comparison batteries are stored, processed, and analyzed;
determining aging state values of the battery at defined times and/or for defined events using a battery reference model;
forming an aging state pattern of the battery based on the determined aging state values; and
determining a predicted aging state value and/or a predicted aging state pattern of the battery: (i) by extrapolating the aging state pattern that is formed, and (ii) by associating the formed aging state pattern with an ascertained aging state pattern from the data of the comparison batteries stored in the memory device, multiple aging state patterns being ascertained from the data stored in the memory device.

Assignees

• Bosch Gmbh Robert

Inventors

• Simonis Christian
• Woll Christoph

Classifications

• G01R31/367 Primary

  Software therefor, e.g. for battery testing using modelling or look-up tables · CPC title

• G01R31/392

  Determining battery ageing or deterioration, e.g. state of health · CPC title

• G07C5/10

  using counting means or digital clocks · CPC title

• H01M10/4285 Primary

  Testing apparatus · CPC title

• H01M10/48 Primary

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title