Method for Providing Codes for the State of Risk of a Battery

• US 20140019449A1
• Filed: 07/12/2013
• Published: 01/16/2014
• Est. Priority Date: 07/16/2012
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Stimm, Frank
• Application Number:
  US13/940,746
• Publication Number:
  US 20140019449A1
• Time in Patent Office: Days
• US Class Current: 707/736
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G06F 16/30 of unstructured textual data document management systems G06F16/93

Abstract

The present disclosure relates to a method for providing codes which describe the state of risk (SOR) of a battery having at least one cell. The method includes determining a code SORT for the state of risk of the battery with regard to the cell temperature, and determining a code SORV for the state of risk of the battery with respect to the cell voltage. The method further includes providing the code SORT and/or the code SORV for further use.

Claims

1. A method for providing codes configured to describe a state of risk of a battery having at least one cell, the method comprising:

determining a code SORT for the state of risk of the battery with regard to a cell temperature of the at least one cell, the code SORT being determined by a first evaluation function configured to take into account a first plurality of input variables including (i) an instantaneous cell temperature for the at least one cell, (ii) a number of events in which the instantaneous cell temperature has exceeded a predefined threshold value, and (iii) an instantaneous rate of cell temperature change of the at least one cell;

determining a code SORV for the state of risk of the battery with respect to a cell voltage of the at least one cell, the code SORV being determined by a second evaluation function configured to take into account a second plurality of input variables including (i) a battery voltage, and (ii) the cell voltage of the at least one cell; and

providing at least one of the code SORT and the code SORV for further use.

2. The method according to claim 1, wherein the first plurality of input variables further includes at least one of (i) a number of deep discharges of at least one cell, (ii) an overcharging of the at least one cell, (iii) a cell pressure of the at least one cell, and (iv) an evolution of gas in the at least one cell.

3. The method according to claim 1, wherein the second plurality of input variables further includes at least one of (i) a link voltage, (ii) an instantaneous insulation resistance, (iii) a battery current, and (iv) a number of detected blown fuses of the battery.

4. The method according to claim 1, wherein at least one of the first evaluation function and the second evaluation function includes using at least one of a fault tree, a truth table, and an algorithm.

5. The method according to claim 4, wherein variables of the first plurality of variables and variables of the second plurality of variables are used with different weightings.

6. The method according to claim 1, further comprising:

reading the first plurality of variables and the second plurality of variables from a memory of a battery management system of the battery.

7. The method according to claim 1, further comprising:

providing the code SORT and the code SORV for an on-board diagnostic system.

8. The method according to claim 1, wherein a computer program is configured to enable a data processing device to carry out the method after the computer program has been loaded into a memory device of the data processing device.

9. The method according to claim 8, wherein:

the computer program is downloaded from an electronic data network onto the data processing device connected to the data network, and

the electronic data network is the Internet.

10. A computer-readable storage medium of a data processing device comprising:

a memory device configured to store a program for enabling the data processing device to carry out a method after the program has been loaded into the memory device,

wherein the method is for providing codes configured to describe a state of risk of a battery having at least one cell,

wherein the method includes

determining a code SORT for the state of risk of the battery with regard to a cell temperature of the at least one cell, the code SORT being determined by a first evaluation function configured to take into account a first plurality of input variables including (i) an instantaneous cell temperature for the at least one cell, (ii) a number of events in which the instantaneous cell temperature has exceeded a predefined threshold value, and (iii) an instantaneous rate of cell temperature change of the at least one cell,

determining a code SORV for the state of risk of the battery with respect to a cell voltage of the at least one cell, the code SORV being determined by a second evaluation function configured to take into account a second plurality of input variables including (i) a battery voltage, and (ii) the cell voltage of the at least one cell, and

providing at least one of the code SORT and the code SORV for further use.