METHOD FOR RECOGNIZING A CRITICAL BATTERY CONDITION AFTER A RESET OF A BATTERY MONITORING DEVICE

• US 20130141108A1
• Filed: 07/14/2011
• Published: 06/06/2013
• Est. Priority Date: 08/26/2010
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Motz, Juergen, Kizler, Joachim
• Application Number:
  US13/816,513
• Publication Number:
  US 20130141108A1
• Time in Patent Office: Days
• US Class Current: 324/426
• CPC Class Codes: G01R 31/3647 for determining the ability of a battery to perform a critical function, e.g. cranking
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The invention relates to a method for recognising a critical battery condition after a reset (200) of a battery monitoring device (100), wherein a data item indicating the critical battery condition is stored (221) in a non-volatile memory (121) when a critical battery condition is recognised (220) by the battery monitoring device (100), and after the reset (200) of the battery monitoring device (100) a critical battery condition is recognised (211, 220) if the data item indicating the critical battery condition is stored in the non-volatile memory (121).

Claims

1. A method for recognizing a critical battery state after resetting a battery monitoring device (100), wherein a datum that indicates the critical battery state is stored (221) in a non-volatile memory (121) if the battery monitoring device (100) recognizes (220) a critical battery state, and a critical battery state is recognized (211, 220) after resetting (200) the battery monitoring device if the datum that indicates the critical battery state is stored in the non-volatile memory (121), wherein the datum that indicates the critical battery state is deleted (231) from the non-volatile memory (121) if a non-critical battery state is recognized (230).

2. The method as claimed in claim 1, wherein a critical battery state is recognized (220) if a value that characterizes the battery state is below a first threshold value.

5. The method as claimed in claim 1, wherein a non-critical battery state is recognized (230) if a value that characterizes the battery state exceeds a second threshold value.

6. The method as claimed in claim 1, wherein functions that could cause the vehicle to fail to start are deactivated (221) if a critical battery state is recognized (220).

7. The method as claimed in claim 6, wherein functions that could cause the vehicle to fail to start are deactivated (221) if a critical battery state is recognized (211, 220) after resetting (200) the battery monitoring device.

8. The method as claimed in claim 1, wherein the datum that indicates the critical battery state is stored (221) in the non-volatile memory (121) immediately or promptly if the battery monitoring device (100) recognizes (220) a critical battery state.

9. A battery monitoring device (100) having a data processing unit (120) that is equipped for the purpose of performing a method as claimed in claim 1, and having an integrated non-volatile memory (121) for storing the datum that indicates the critical battery state.

11. The method as claimed in claim 2, wherein the battery state is a state of charge.

12. The method as claimed in claim 5, wherein the battery state is a state of charge.

13. The method as claimed in claim 1, wherein the datum that indicates the critical battery state is stored (221) in the non-volatile memory (121) within one second if the battery monitoring device (100) recognizes (220) a critical battery state.

14. The method as claimed in claim 1, wherein the datum that indicates the critical battery state is stored (221) in the non-volatile memory (121) within ten seconds if the battery monitoring device (100) recognizes (220) a critical battery state.

15. The method as claimed in claim 1, wherein the datum that indicates the critical battery state is stored (221) in the non-volatile memory (121) within sixty seconds if the battery monitoring device (100) recognizes (220) a critical battery state.

3. (canceled)

4. (canceled)

10. (canceled)