METHOD FOR MONITORING A COMPONENT IN A MOTOR VEHICLE

• US 20160193973A1
• Filed: 08/29/2014
• Published: 07/07/2016
• Est. Priority Date: 09/02/2013
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Rupp, Thomas, Cermak, Stefan, Werneth, Jens
• Granted Patent: US 9,725,054 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 3/0084 relating to control modules
• CPC Class Codes: B60L 3/0092 with use of redundant elements for safety purposes
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/60 using power supplied by batteries in combination with fuel cells B60L50/75
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60R 16/0315 using multiplexing techniques multiplexing for transmission of signals G08C15/00; multiplexing for electrical communication in general H04J
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G06F 1/28 Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
• CPC Class Codes: G06F 11/0739 in a data processing system embedded in automotive or aircraft systems
• CPC Class Codes: G06F 11/0751 Error or fault detection not based on redundancy power supply failures G06F1/30; network fault management H04L41/06
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• 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 10/48 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 Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H04Q 2209/30 using a wired architecture
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles

Abstract

The invention relates to a method for monitoring a component (12), in particular a battery, of a motor vehicle having a first control unit (14) for monitoring the component (12) and a second control unit (16) for monitoring the component (12), wherein the second control unit (16) is arranged at a distance from the first control unit (14) and communicates with the first control unit (14), wherein the second control unit (16) is connected to the component (12) via a line (20), in particular a hardware line, comprising the steps of transmitting operating data to the first control unit (14) by means of the second control unit (16), checking the operating data in the first control unit (14), transmitting data from the first control unit (14) to the second control unit (16), switching off the component (12) by means of the second control unit (16) if interference is detected by means of the first control unit (14) and/or the second control unit (16). The invention makes possible spatial separation of the control unit to be tested from the control unit carrying out the switching off, wherein the installation position of the control unit to be tested can be selected freely.

Claims

1. A method for monitoring a component (12) of a motor vehicle having a first control unit (14) for monitoring the component (12),

a second control unit (16) for monitoring the component (12),

wherein the second control unit (16) is disposed at a distance from the first control unit (14) and communicates with the first control unit (14), wherein the second control unit (16) is connected to the component (12) via a line (20), the method comprising:

transmitting operating data to the first control unit (14) by the second control unit (16),

checking the operating data in the first control unit (14),

transmitting data from the first control unit (14) to the second control unit (16), and

switching off the component (12) by the second control unit (16) if interference is detected.

2. The method as claimed in claim 1, wherein the first control unit (14) and the second control unit (16) communicate with one another via a field bus.

3. The method as claimed in claim 1, wherein the first control unit (14) has an ASIL-X safety classification and the second control unit (16) has a QM safety classification.

4. The method as claimed in claim 1, wherein the first control unit (14) has an ASIL-X safety classification and the second control unit (16) has an ASIL-X safety classification.

5. The method as claimed in claim 1, wherein the component has an actuator (18) for communicating and switching off the component (12), wherein the actuator (18) is connected to the second control unit (16) and the actuator (18) is switched off by the second control unit (16) as soon as a communication interruption between the first control unit (14) and the second control unit (16) is detected, whereby the component (12) is also switched off.

6. The method as claimed in claim 1, wherein the second control unit (16) transmits the operating data to the first control unit (14) within a predetermined time.

7. The method as claimed in claim 1, wherein the first control unit (14) comprises a first computer unit (30) and a first monitoring module (32) and the second control unit (16) comprises a second computer unit (24) and a second monitoring module (22), wherein, via the second computer unit (24), a secured line to the first computer unit (30) is established via a field bus in order to connect the first computer unit (30) to the second monitoring module (22).

8. The method as claimed in claim 7, wherein a counting register which is incremented when erroneous data of the first computer unit (30) are transmitted.

9. The method as claimed in claim 7, wherein the first computer unit (30) deliberately transmits incorrect data to the first monitoring module (32) and/or to the second monitoring module (22).

10. The method as claimed in claim 7, wherein the first monitoring module (32) switches off the secured line to the second monitoring module (22) via the field bus as soon as the counting register reaches a predetermined value.

11. The method as claimed in claim 1, wherein the second control unit (16) is connected to multiple components.

12. The method as claimed in claim 11, wherein the second control unit (16) comprises a second computer unit, wherein the second computer unit comprises a switching computer unit in order to control multiple lines hardware lines.

13. An arrangement for monitoring a component (12) of a motor vehicle having a first control unit (14) and a second control unit (16), wherein the arrangement is configured such that a method for monitoring the component (12) is carried out according to a method of claim 1.

14. A component of a motor vehicle having an arrangement (10) for monitoring the component (12), wherein the arrangement (10) is designed in such a way that a method as claimed in claim 1 can be carried out.

16. The method as claimed in claim 1, wherein the component (12) is switched off when interference is detected by the first control unit (14).

17. The method as claimed in claim 1, wherein the component (12) is switched off when interference is detected by the second control unit (16).

18. The method as claimed in claim 2, wherein the field bus is a CAN bus or a FlexRay bus.

19. The method as claimed in claim 8, wherein the first monitoring module (32) comprises the counting register.

20. The method as claimed in claim 8, wherein the second monitoring module (22) comprises the counting register.

15. A motor vehicle having an electric drive motor for driving the motor vehicle and having a component (12), which is a battery, as claimed in 14, which is connected or connectable to the electric drive motor.