Method for matching data of a first control unit with a second control unit for determining precise predictive values

Patent metadata

Field	Value
Publication number	US-12107239-B2
Application number	US-202017621442-A
Country	US
Kind code	B2
Filing date	Jul 21, 2020
Priority date	Aug 20, 2019
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

Abstract

A method for matching data of a first control unit for controlling an electrical energy storage unit, which includes a plurality of electrochemical energy stores, with a second control unit for determining precise predictive values.

First claim

What is claimed is:

1. A method for matching data of a first control unit for controlling an electrical energy storage unit, including a plurality of electrochemical energy stores, with a second control unit for determining precise predictive values, the method comprising:
a) providing a multiplicity of data of an electrochemical model of the electrical energy storage unit in groups for different aging levels of the electrical energy storage unit using a memory of the second control unit;
b) providing at least one of the groups of data using a memory of the first control unit;
c) detecting first voltage variables, which represent a voltage of the electrochemical energy stores;
d) forming a mean value of the detected first voltage variables;
e) wirelessly matching at least one group of data of the memory of the first control unit with a group of data of the memory of the second control unit when a voltage difference between the formed mean value of the detected first voltage variables and a model voltage variable calculated using the group of data provided by the memory of the first control unit exceeds a predefined threshold value.

2. The method as recited in claim 1 , further comprising:
f) detecting second voltage variables, which represent a voltage of the electrochemical energy stores;
g) forming a mean value of the detected second voltage variables;
h) generating a signal as a function of a voltage difference between the formed mean value of the detected second voltage variables and a model voltage variable calculated using the matched group of data.

3. The method as recited in claim 2 , wherein the generated signal is an error signal when the voltage difference exceeds a predefined threshold value.

4. The method as recited in claim 1 , further comprising:
c.1) comparing an ascertained utilization variable, which represents a cyclical aging and/or a calendar aging of the electrical energy storage unit and/or the electrochemical energy stores, with a predefined threshold value; and/or
c.2) checking whether the electrical energy storage unit is working free of errors;
c.3) carrying out step c) when the ascertained utilization variable exceeds the predefined threshold value and/or the electrical storage unit is working free of errors.

5. The method as recited in claim 1 , further comprising:
d.1) discarding outliers of the detected first voltage variables.

6. The method as recited in claim 1 , further comprising:
d.2) comparing a dispersion measure of the detected voltage variables with a second predefined threshold value;
d.3) carrying out step d) when the dispersion measure does not exceed the second predefined threshold value.

7. The method as recited in claim 1 , further comprising:
e.1) checking an instantaneous operating state of the electrical energy storage unit;
e.2) carrying out step e) when the electrical energy storage unit is not in operation.

8. The method as recited in claim 1 , wherein the data of the electrochemical model of the electrochemical energy stores include one-dimensional or multidimensional characteristic maps and/or parameters, including a temperature, a current, a state of charge, or a state of health.

9. The method as recited in claim 1 , wherein the electrical energy storage unit is in an electric vehicle, or a hybrid vehicle, or a plug-in hybrid vehicle, or an aircraft, or a pedelec, or an e-bike, or for a portable device for a telecommunication system, or a data processing system, or for an electric handheld tool, or a kitchen appliance, or a stationary store for storing renewably generated electrical energy.

10. A device for operating an electrical energy storage unit which includes a plurality of electrochemical energy stores, the device comprising:
at least one sensor configured to detect electrical variables of the electrochemical energy stores; and
a first control unit configured to control the electrical energy storage unit, the first control unit being configured to:
a) provide a multiplicity of data of an electrochemical model of the electrical energy storage unit in groups for different aging levels of the electrical energy storage unit using a memory of a second control unit;
b) provide at least one of the groups of data using a memory of the first control unit;
c) detect, using the at least one sensor, first voltage variables, which represent a voltage of the electrochemical energy stores;
d) form a mean value of the detected first voltage variables;
e) wirelessly match at least one group of data of the memory of the first control unit with a group of data of the memory of the second control unit when a voltage difference between the formed mean value of the detected first voltage variables and a model voltage variable calculated using the group of data provided by the memory of the first control unit exceeds a predefined threshold value.

Assignees

• Bosch Gmbh Robert

Inventors

• Woll Christoph
• Doege Volker

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J7/84

  Control of state of health [SOH] · CPC title

• H02J7/82

  Control of state of charge [SOC] · CPC title

• H02J7/52

  for charge balancing, e.g. equalisation of charge between batteries · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title