Method and device for estimating a state of an energy storage system of a vehicle

Patent metadata

Field	Value
Publication number	US-2019140323-A1
Application number	US-201716093952-A
Country	US
Kind code	A1
Filing date	Apr 7, 2017
Priority date	Apr 15, 2016
Publication date	May 9, 2019
Grant date	—

Abstract

A method of estimating a state of an energy storage system of a vehicle, in particular for estimating an aging state of the energy storage system, includes the following steps: acquiring information about the energy storage system; analyzing the acquired information while taking into account specified boundary conditions; and estimating the state of the energy storage system.

First claim

1 . A method of estimating a state of an energy storage system of a vehicle, wherein the method comprises:
acquiring information about the energy storage system; analyzing the acquired information while taking into account specified boundary conditions; and estimating the state of the energy storage system.

2 . The method of claim 1 , comprising acquiring information about discharge processes of the energy storage system.

3 . The method of claim 1 , comprising acquiring information about charging processes of the energy storage system.

4 . (canceled)

5 . The method of claim 1 , wherein vehicle function data is recorded for acquiring the information about the energy storage system, for acquiring information about discharge processes, or for acquiring information about charging processes, or for any combination thereof.

6 . The method of claim 5 , comprising:
generating output information based on the vehicle function data; and providing the generated output information, in the form of a data record, a graphical representation, and/or a graphical user interface.

7 . The method of claim 6 , wherein the output information comprises an estimate of the state of the energy storage system.

8 . The method as claimed in any one of claim 5 , wherein an occurrence, an absence or a function restriction of at least one vehicle function is concluded or can be concluded from the vehicle function data.

9 . The method of claim 5 , wherein a frequency of a function change, in particular an occurrence, an absence or a function restriction of at least one vehicle function, during a specified or specifiable period of time is concluded or can be concluded from the vehicle function data.

10 . The method as claimed in claim 5 , wherein a period of time required for a function change of at least one vehicle function is concluded or can be concluded from the vehicle function data, wherein the function change comprises an occurrence, an absence or a function restriction.

11 . The method of claim 5 , wherein a reason for, or a cause of, an absence or a function restriction of at least one vehicle function is concluded or can be concluded from the vehicle function data.

12 . The method of claim 5 , wherein the vehicle function data comprise data concerning a fulfillment/non-fulfillment of at least one vehicle function, in particular data concerning switching off and/or switching on, in particular switching back on, a combustion engine of the vehicle in a start-stop mode of the combustion engine.

13 . The method of claim 5 , wherein the vehicle function data comprise data concerning a fulfillment/non-fulfillment of at least one vehicle function relating to at least one functional component or safety component, operation of a radiator of an engine of the vehicle, internal lighting, external lighting, power steering, power braking, a gearbox, a clutch, an electric clutch, technical driving safety systems, ride stability control systems, or driving dynamics management-systems, or any combination thereof.

14 . The method of claim 5 , wherein the vehicle function data comprise data concerning the fulfilment/non-fulfilment of at least one vehicle function, wherein the at least one vehicle function relates to operation of at least one comfort component, operation of an air conditioning system, heating, seat heating, an audio/video entertainment system, or a navigation system, or any combination thereof.

15 . The method of claim 5 , wherein the specified boundary conditions comprise predetermined or definable vehicle function data and/or example vehicle function data.

16 . The method of claim 1 , wherein estimating the state of the energy storage system comprises taking into account, as an additional parameter, a measured electrical property of the energy storage system, a measured electrical behavior of the energy storage system, wherein the electrical property and/or the electrical is determined via a battery tester.

17 . The method of claim 1 , wherein estimating a state the energy storage system comprises taking into account, as an additional parameter, information about the manufacturer, the data of manufacture, or the type of the energy storage system, or any combination thereof.

18 . The method of claim 1 , wherein estimating the state of the energy storage system is carried out using a software-based simulation model.

19 . The method of claim 18 , wherein the acquired information about the energy storage system, the acquired information about discharge processes, or the acquired information about charging processes, or any combination thereof, are input values for the software-based simulation model.

20 . The method of claim 1 , wherein the energy storage system is embodied as an accumulator, as a double-layer capacitor, or as a fuel cell, or as any combination thereof.

21 - 25 . (canceled)

Assignees

• Johnson Controls Autobatterie Gmbh & Co Kgaa
• Bosch Gmbh Robert

Inventors

• Koch Ingo
• Meissner Eberhard
• Ostertag Peter

Classifications

• B60L58/16

  responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH] · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• B60L2250/16

  by display · CPC title

• B60L2260/44

  by parameter estimation · CPC title

• H01M10/4285 Primary

  Testing apparatus · CPC title