Method for Data Transfer between Electronic Control Devices, Battery and Motor Vehicle with such a Battery

• US 20150191096A1
• Filed: 06/18/2013
• Published: 07/09/2015
• Est. Priority Date: 06/28/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Brochhaus, Christoph, Becker, Jens
• Granted Patent: US 9,393,880 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H04L 12/40169 Flexible bus arrangements arrangements for maintenance or administration involving management of faults; events, alarms H04L41/06; automatic restoration of network faults H04L41/0654
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

The disclosure relates to a method for data transfer between electronic control devices, a battery and a motor vehicle with such a battery, which are particularly suitable for reducing the communications load on the communications bus between a main control device and one or more subordinate control devices, particularly between control devices of a battery management system. For this purpose, a method for data transfer between electronic control devices is provided, wherein the control devices comprise at least one main control device and at least one subordinate control device. Measurement values are detected by the at least one subordinate control device. Derived data is formed by the at least one subordinate control device from at least one part of the detected measurement values, and the derived data is transferred to at least one main control device.

Claims

1. A method for data transmission between electronic controllers including at least one main controller and at least one subordinate controller, the method comprising:

acquiring measured values with the at least one subordinate controller;

deriving data from at least some of the acquired measured values;

compiling the derived data with the at least one subordinate controller; and

transmitting the derived data to the at least one main controller.

2. The method as claimed in claim 1, wherein the derived data is a difference between the measured values from successive measurements of the measure values.

3. The method as claimed in claim 1, further comprising:

predefining a resolution of the derived data.

4. The method as claimed in claim 3, the predefining further comprising:

predefining the resolution on the basis of a measured variable of the measured values.

5. The method as claimed in claim 1, further comprising:

transmitting, with at least one of the at least one subordinate controller, at least some of the acquired measured values based on a predefinable number of data items of the derived data.

6. The method as claimed in claim 1, further comprising:

controlling a necessary bandwidth for transmitting the derived data by at least one of predefining a resolution of the derived data; and

predefining a frequency of transmission of the acquired measured values.

7. The method as claimed in claim 1, further comprising:

providing free bandwidth for transmitting additional data from one of the at least one main controllers to one of the at least one subordinate controllers.

8. The method as claimed in claim 5, wherein:

the at least one subordinate controller is a plurality of subordinate controllers; and

the method further comprises;

transmitting the acquired measured values cyclically with the plurality of subordinate controllers.

9. A battery system comprising:

a battery;

at least one main controller; and

at least one subordinate controller, the at least one main controller and the at least one subordinate controller being configured to;

acquire measured values with the at least one subordinate controller;

derive data from at least some of the acquired measured values;

compile the derived data with the at least one subordinate controller; and

transmit the derived data to the at least one main controller.

10. A motor vehicle comprising:

an electric drive motor; and

a battery system that is one of connected and connectable to the electric drive motor, the battery system comprising;

a battery;

at least one main controller; and

at least one subordinate controller, the at least one main controller and the at least one subordinate controller being configured to;

acquire measured values with the at least one subordinate controller;

derive data from at least some of the acquired measured values;

compile the derived data with the at least one subordinate controller; and

transmit the derived data to the at least one main controller.