Method and devices for making available information for the purpose of performing maintenance and servicing of a battery

• US 9,702,941 B2
• Filed: 05/16/2014
• Issued: 07/11/2017
• Est. Priority Date: 05/22/2013
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Brochhaus, Christoph
• Primary Examiner(s): Tsai, Carol S
• Application Number:
  US14/279,464
• Publication Number:
  US 20140350876A1
• Time in Patent Office: 1,152 Days
• Field of Search: 702 63, 340455, 340635, 3406361, 358 21, 358 324, 358518
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health

Abstract

A method makes available information for the purpose of performing maintenance and servicing of a battery, which includes at least one battery module with an assigned module control device and a central control device, wherein at least one module control device has a non-volatile memory. The method comprises detecting and quantizing useful data of battery units, forming a histogram which has frequency values of the occurrence of specific values of the individual quantized useful data or values derived therefrom, transferring the histogram from the central control device to a module control device, and storing the histogram in the non-volatile memory of the module control device. Furthermore, a computer program and a battery management system are specified which are configured to execute the method, as well as a battery and a motor vehicle whose drive system is connected to a battery of this type.

Claims

1. A method for making available information for the purpose of performing maintenance and servicing of a battery having at least one battery module with a module control device and a central control device, wherein the module control device has a non-volatile memory, the method comprising:

detecting and quantizing useful data of battery units;

generating a histogram which has frequency values of the occurrence of specific values of the individual quantized useful data or values derived therefrom;

transferring the histogram from the central control device to the module control device;

loading an existing histogram from the non-volatile memory of the module control device;

combining the histogram received by the central control device and the existing histogram to generate an updated histogram; and

storing the updated histogram in the non-volatile memory of the module control device.

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

storing the updated histogram in a non-volatile memory of the central control device.

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

in response to replacement of an old battery module with a new battery module, initializing the new battery module with an empty histogram.

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

detecting the useful data with a detection rate having a defined value between 6 per second and 6 per hour.

5. The method according to claim 1, wherein the useful data of the battery includes one selected from the group consisting of a temperature, a state of charge, an output current, and a voltage which is made available.