Data Transmission Method for a Battery Management System
AssigneesSamsung SDI Co., Ltd., Robert Bosch GmbH
InventorsJens Becker, Christoph Brochhaus
Life of this patent
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Abstract
A method for compressing measurement data which is transmitted from sensor control units via a data bus to a primary control unit of a battery management system for vehicles, includes transmitting a rate of change/slope of the measurement data to the primary control unit at a start of measurements. The method further includes transmitting deviations/differences in the measurement data from a current slope, and reconstructing, without loss of information, correct measured values from the rates of change/slope and the received deviations/differences with the primary control unit.
Claims11
A method for compressing measurement data which is transmitted from sensor control units via a data bus to a primary control unit of a battery management system for vehicles, comprising:
- transmitting a rate of change/slope of the measurement data to the primary control unit at a start of measurements;
- transmitting deviations/differences in the measurement data from a current slope;
- and
- reconstructing, without loss of information, correct measured values from the rates of change/slope and the received deviations/differences with the primary control unit.
A battery management system for operating a battery pack comprising:
- a plurality of battery modules;
- a plurality of sensor control units;
- and
- a primary control unit configured to communicate with the sensor control units via a data bus,
- wherein the data bus transmits deviations/differences of an actual measured value from extrapolated measured values and a rate of change/slope under partial utilization at measurement points to the primary control unit, and
- wherein the primary control unit is configured to extrapolate future measured values from a last measured value and the slope.
A hybrid vehicle comprising:
- at least one lithium-ion battery pack;
- and
- a battery management system configured to operate the at least one lithium-ion battery pack, the battery management system including (i) a plurality of battery modules, (ii) a plurality of sensor control units, and (iii) a primary control unit configured to communicate with the sensor control units via a data bus,
- wherein the battery management system is configured to execute a method for compressing measurement data which is transmitted from the plurality of sensor control units via the data bus to the primary control unit, and
- wherein the method includes (i) transmitting a rate of change/slope of the measurement data to the primary control unit at a start of measurements, (ii) transmitting deviations/differences in the measurement data from a current slope, and (iii) reconstructing, without loss of information, correct measured values from the rates of change/slope and the received deviations/differences with the primary control unit.
Dependencies are inferred from the claim text.