Method and device for detecting wear in control units

• US 20050283341A1
• Filed: 11/24/2004
• Published: 12/22/2005
• Est. Priority Date: 12/19/2003
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Wohlfahrt, Stephan, Dressler, Klaus
• Application Number:
  US10/996,485
• Publication Number:
  US 20050283341A1
• Time in Patent Office: Days
• US Class Current: 702/185
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A method and a device for detecting wear in control units for controlling operating sequences in a vehicle, as well as a corresponding control unit, a variable representing the wear of a charge-coupled memory of the control unit is evaluated for the detection of wear of the control unit.

Claims

1. A method for detecting wear in control units for controlling operating sequences in a vehicle, the method comprising:

evaluating a variable representing the wear of a charge-coupled memory of a control unit for the detection of wear of the control unit.

2. The method according to claim 1, wherein the variable representing the wear of the charge-coupled memory corresponds to a temperature of the charge-coupled memory.

3. The method according to claim 1, wherein the variable representing the wear of the charge-coupled memory corresponds to an electrical charge of the charge-coupled memory.

4. The method according to claim 1, wherein the variable representing the wear of the charge-coupled memory corresponds to a variable that changes with a temperature of the charge-coupled memory.

5. The method according to claim 1, wherein the variable representing the wear of the charge-coupled memory corresponds to a frequency of an alternating voltage.

6. The method according to claim 1, further comprising, in the light of the detection of the wear, ascertaining a first service life of the charge-coupled memory and from that ascertaining a second service life of the control unit.

7. The method according to claim 1, further comprising ascertaining a loss of dielectric medium as a function of the variable representing the wear of the charge-coupled memory.

8. A device for detecting wear in control units for controlling operating sequences in a vehicle, comprising:

means for evaluating a variable representing the wear of a charge-coupled memory of a control unit for the detection of wear of the control unit.

9. The device according to claim 8, wherein the charge-coupled memory is situated in the control unit.

10. The device according to claim 8, wherein the charge-coupled memory forms a constructional unit with the control unit.

11. The device according to claim 8, wherein the charge-coupled memory is a capacitor in the control unit.

12. The device according to claim 11, wherein the capacitor is an electrolyte capacitor.

13. The device according to claim 8, wherein the charge-coupled memory is a battery in the control unit.

14. A control unit comprising:

a device for detecting wear for controlling operating sequences in a vehicle, the device including means for evaluating a variable representing the wear of a charge-coupled memory of the control unit for the detection of wear of the control unit.