Method and apparatus for operating a battery arrangement of a motor vehicle

Patent metadata

Field	Value
Publication number	US-9643515-B2
Application number	US-201314386433-A
Country	US
Kind code	B2
Filing date	Jan 24, 2013
Priority date	Mar 20, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

The invention relates to a method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ), in particular a traction battery of the motor vehicle ( 10 ), wherein expected environmental conditions and/or use parameters of the motor vehicle ( 10 ) are determined ( 42 ), wherein an expected withdrawal of energy from an electrical energy store of the battery arrangement ( 14 ) is determined ( 44 ), wherein a heat loss of the battery arrangement ( 14 ) is calculated ( 46 ) on the basis of the expected withdrawal of energy, wherein a temperature profile ( 30 ) of the battery arrangement ( 14 ) is predicted ( 48 ) on the basis of the calculated heat loss and the expected environmental conditions and/or use parameters, and wherein a temperature of the battery arrangement ( 14 ) is set ( 54 ) on the basis of the predicted temperature profile ( 30 ).

First claim

The invention claimed is:

1. A method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ), having the steps of:
determining ( 42 ), by a device ( 16 ), anticipated environmental conditions and/or operating parameters of the motor vehicle ( 10 ),
determining ( 44 ), by the device ( 16 ), an anticipated energy withdrawal from an electric energy storage device of the battery arrangement ( 14 ),
calculating ( 46 ), by the device ( 16 ), heat loss from the battery arrangement ( 14 ) on the basis of the anticipated energy withdrawal,
predicting ( 48 ), by the device ( 16 ), a temperature progression ( 30 ) of the battery arrangement ( 14 ) on the basis of the calculated heat loss and the anticipated environmental conditions and/or operating parameters, and
setting ( 54 ), by the device ( 16 ), a temperature for the battery arrangement ( 14 ) on the basis of the predicted temperature progression ( 30 );
wherein, when the predicted temperature progression ( 30 ) lies within a pre-defined first temperature range ( 32 ) the battery arrangement ( 14 ) is not heated or cooled, when the predicted temperature progression ( 30 ) lies within a pre-defined second temperature range ( 34 ) that extends the pre-defined first temperature range ( 32 ) for less than a pre-defined period of time, the battery arrangement ( 14 ) is not heated or cooled, when the predicted temperature progression ( 30 ) lies outside the pre-defined second temperature range ( 34 ) the battery arrangement ( 14 ) is heated or cooled, and when the predicted temperature progression ( 30 ) lies within the pre-defined second temperature range ( 34 ) for more than the pre-defined period of time, the battery arrangement ( 14 ) is heated or cooled.

2. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the battery arrangement ( 14 ) is heated or cooled by a medium that is surrounding the motor vehicle ( 10 ).

3. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the temperature is set by artificially heating or cooling the battery arrangement ( 14 ).

4. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein a lower temperature threshold ( 39 ) of the pre-defined first temperature range ( 32 ) is set based upon the anticipated environmental conditions and/or operating parameters.

5. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the battery arrangement ( 14 ) is heated or cooled if the battery arrangement ( 14 ) is operated for a pre-defined period of time outside the pre-defined first temperature range ( 32 ) in order to set the temperature of the battery arrangement ( 14 ) to a temperature within the pre-defined first temperature range ( 32 ).

6. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the battery arrangement ( 14 ) is heated or cooled if the battery arrangement ( 14 ) is operated outside the pre-defined first temperature range ( 32 ) and the predicted temperature progression ( 30 ) lies outside the pre-defined first temperature range ( 32 ) in order to set the temperature of the battery arrangement ( 14 ) to a temperature within the first temperature range ( 32 ).

7. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in any claim 1 , wherein the anticipated energy withdrawal is determined on the basis of the anticipated environmental conditions and/or operating conditions.

8. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in any claim 1 , wherein the temperature is set during a driving operation and/or during a period of time in which the motor vehicle ( 10 ) is shut down.

9. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 8 , wherein the battery arrangement ( 14 ) is pre-cooled or pre-heated during the shut-down period in the case of the motor vehicle ( 10 ) being connected to an external electric energy source ( 24 ) on the basis of the anticipated environmental conditions and/or operating parameters.

10. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the temperature progression ( 30 ) is predicted regularly at a pre-defined time interval.

11. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the anticipated environmental conditions and/or operating parameters comprise at least one of the following features:
a route profile of a route to be traveled by the motor vehicle ( 10 ),
an ambient temperature along the route to be traveled,
an ambient temperature progression during the period of time in which the motor vehicle ( 10 ) is shut down.

12. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the anticipated environment conditions and/or operating parameters are determined using a route guidance system ( 20 ) that is allocated to the motor vehicle ( 10 ) and/or using a communication network ( 22 ).

13. A device ( 16 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ), wherein the device ( 16 ) can be electrically coupled to a heating/cooling arrangement ( 18 ) for the purpose of heating or cooling the battery arrangement ( 14 ), and wherein the device ( 16 ) is designed so as to perform the method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 .

14. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the battery arrangement ( 14 ) includes a traction battery.

15. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 2 , wherein the medium is ambient air that is surrounding the motor vehicle ( 10 ).

16. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in any claim 1 , wherein the temperature is set during a period of time in which the motor vehicle ( 10 ) is shut down.

17. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the temperature is set during a driving operation of the motor vehicle ( 10 ).

18. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the battery arrangement ( 14 ) is heated or cooled if the temperature of the battery arrangement ( 14 ) moves outside the predefined second temperature range.

19. The method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ) as claimed in claim 1 , wherein the battery arrangement ( 14 ) is heated or cooled if the temperature of the battery arrangement ( 14 ) is outside the predefined first temperature range ( 32 ) and is within the predefined second temperature range, and if no temperature of the temperature progression ( 30 ) of the battery arrangement ( 14 ) is expected to fall within the predefined first temperature range.

20. A method ( 40 ) for operating a battery arrangement ( 14 ) of a motor vehicle ( 10 ), having the steps of:
determining ( 42 ), by a device ( 16 ), anticipated environmental condit

Assignees

• Bosch Gmbh Robert

Inventors

• Wagner Andreas
• Schulte-Coerne Vincent

Classifications

• H01M10/48

  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

• Y02T10/7291

  Cross-Sectional Technologies · mapped topic

• H01M10/6561

  Gases · CPC title

• Y02T90/16

  Information or communication technologies improving the operation of electric vehicles · CPC title

• H01M10/615

  Heating or keeping warm · CPC title