Abstract: The disclosure relates to a method for the battery management of a battery which comprises a plurality of battery cells and which is fitted with a battery management system for monitoring battery functionality and with a charge state compensation system, wherein the battery management system comprises a plurality of sensor control devices and a main control device, said control devices being connected with one another via a communication channel, and wherein the charge state compensation system has a number of charge state compensation resistors being put into operation via the sensor control devices for a charge state compensation of battery cells. The sensor control devices save information about performed charge state compensations in non-volatile memory. A computer program, a battery management system, a battery system and a motor vehicle, which are designed to carry out the method, are also described.

Abstract: A method for authenticating measurement data for a battery that comprises at least one battery module, having an associated module controller, and a central controller has the following steps: capture of measurement data from battery units by the module controller; ascertainment of at least one additional information carrier, which is set up to authenticate the measurement data, by the module controller; transmission of the measurement data and of the additional information carrier from the module controller to the central controller; and validation of the measurement data by the central controller using the additional information carrier. Furthermore, a data structure, a computer program and a battery management system are specified that are set up to perform the method, and also a battery and a motor vehicle, the drive system of which is connected to a battery of this kind.

Abstract: The invention relates to a method for operating a battery system (1) comprising a plurality of battery cells (8) and a battery management system for monitoring and controlling the battery cells (8), wherein the battery management system has a main controller (2) and a first measurement chain (34) and a second measurement chain (36) with in each case a plurality of measurement chips (40, 42) which are designed to redundantly detect measurement data from the battery cells (8) and in each case to carry out diagnoses and state of charge compensation of the battery cells (8).

Abstract: The invention relates to a method for monitoring a battery (16) in a vehicle (10). The battery (16) comprises multiple battery cells (19) or multiple groups (20) of battery cells (19). The method has the following steps: a) detecting a time curve of an operating parameter of at least one individual battery cell (19) during a driving cycle, b) ascertaining charging processes and discharging processes in the detected time curve of the operating parameter, c) ascertaining a use parameter set which comprises functions that characterize the individual charging processes and discharging processes and the functional parameters thereof, the ascertained charging processes and discharging processes being reconstructed using said characterizing functions and functional parameters, and d) storing the ascertained use parameter set in a non-volatile storage unit (32).

Abstract: A method according to the invention for authenticating measurement data relating to a battery, which comprises at least one battery module with an associated module control device (6) and a central control device (2), has the following steps: a) the module control device (6) acquires (S2) measurement data from battery units; b) the module control device (6) determines (S3) at least one additional information carrier which is set up to authenticate the measurement data; c) the measurement data and the additional information carrier are transmitted (S4) from the module control device (6) to the central control device (2); d) the central control device (2) validates (S6) the measurement data using the additional information carrier. In this case, provision is made for the additional information carrier to be determined using the measurement data and a key value defined by the module control device (6).

Abstract: A method for automatically detecting a replacement of a control unit in a battery management system including a battery control unit includes allocating a one-way function to each control unit. The one-way function uses x and y to output z. The input y is a sensor_ID that uniquely identifies the control unit concerned. The method further includes providing a random number generated by the battery control unit to the first control unit at every system start-up as input x. The result z from the first control unit is used as the input x for the subsequent one-way function of the subsequent, second control unit until the nth control unit. The result z of the nth control unit is transmitted to the battery control unit. The method further includes generating a final ID and comparing the final ID with the result z of the nth control unit.

Abstract: The invention relates to a method for transmitting data in a battery management system (1) having at least one main control device (2) and a number of module control devices (6-1, 6-2, . . . , 6-n) which transmit measurement values to the main control device (2) via a communications channel (5). One of the module control devices (6-1, 6-2, . . . , 6-n) is a reference module control device. The method comprises the method steps: a) the reference module control device transmits a reference measurement value on the communications channel (5), b) the module control devices (6-1, 6-2, . . . , 6-n) determine differential values of their own measurement values to the reference measurement value, c) the module control devices (6-1, 6-2, . . . , 6-n) transmit the differential values of their own measurement values to the reference measurement value on the communications channel (5) and d) the main control device (2) reconstructs the measurement values of the module control devices (6-1, 6-2, . . .

Abstract: The invention relates to a method for operating a battery system (1) comprising a plurality of battery cells (8) and a battery management system for monitoring and controlling the battery cells (8), wherein the battery management system has a main controller (2) and a first measurement chain (34) and a second measurement chain (36) with in each case a plurality of measurement chips (40, 42) which are designed to redundantly detect measurement data from the battery cells (8) and in each case to carry out diagnoses and state of charge compensation of the battery cells (8).

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.

Abstract: The disclosure relates to a method for the battery management of a battery which comprises a plurality of battery cells and which is fitted with a battery management system for monitoring battery functionality and with a charge state compensation system, wherein the battery management system comprises a plurality of sensor control devices and a main control device, said control devices being connected with one another via a communication channel, and wherein the charge state compensation system has a number of charge state compensation resistors being put into operation via the sensor control devices for a charge state compensation of battery cells. The sensor control devices save information about performed charge state compensations in non-volatile memory. A computer program, a battery management system, a battery system and a motor vehicle, which are designed to carry out the method, are also described.

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.

Abstract: A method for starting a battery management system (1) is disclosed. The battery management system includes a central controller (2) and at least one battery module (4) with a sensor controller (14) and at least one cell sensor (16) which is assigned to at least one battery cell (8). The method includes determining configuration data of each battery module (4) by the central controller (2), which configuration data comprises at least the indication of the number of cell sensors (16) assigned to each battery module (4), transmitting the configuration data by the central controller (2) to each sensor controller (14) via a communication channel (5), checking the configuration data by the respective sensor controller (14), and initializing each battery module (4) on the basis of the configuration data by the respective sensor controller (14) after successful checking.

Abstract: The invention relates to a method for monitoring a battery (16) in a vehicle (10). The battery (16) comprises multiple battery cells (19) or multiple groups (20) of battery cells (19). The method has the following steps: a) detecting a time curve of an operating parameter of at least one individual battery cell (19) during a driving cycle, b) ascertaining charging processes and discharging processes in the detected time curve of the operating parameter, c) ascertaining a use parameter set which comprises functions that characterize the individual charging processes and discharging processes and the functional parameters thereof, the ascertained charging processes and discharging processes being reconstructed using said characterizing functions and functional parameters, and d) storing the ascertained use parameter set in a non-volatile storage unit (32).

Abstract: The disclosure relates to a method for ascertaining permissible operating parameters of a battery. For this purpose, operating parameters of the battery are measured, and further relevant operating parameters of the battery are determined from the measured operating parameters. Furthermore, at least one of the determined operating parameters is compared with a predefined comparison range. If the at least one operating parameter lies within the predefined comparison range, the permissible operating range of the at least one operating parameter is determined using a mathematical model of the battery. However, if the at least one battery parameter lies outside the predefined comparison range, the permissible operating range of the at least one operating parameter is determined using previously stored battery data.

Abstract: A method for automatically detecting a replacement of a control unit in a battery management system including a battery control unit includes allocating a one-way function to each control unit. The one-way function uses x and y to output z. The input y is a sensor_ID that uniquely identifies the control unit concerned. The method further includes providing a random number generated by the battery control unit to the first control unit at every system start-up as input x. The result z from the first control unit is used as the input x for the subsequent one-way function of the subsequent, second control unit until the nth control unit. The result z of the nth control unit is transmitted to the battery control unit. The method further includes generating a final ID and comparing the final ID with the result z of the nth control unit.

Abstract: A method according to the invention for authenticating measurement data relating to a battery, which comprises at least one battery module with an associated module control device (6) and a central control device (2), has the following steps: a) the module control device (6) acquires (S2) measurement data from battery units; b) the module control device (6) determines (S3) at least one additional information carrier which is set up to authenticate the measurement data; c) the measurement data and the additional information carrier are transmitted (S4) from the module control device (6) to the central control device (2); d) the central control device (2) validates (S6) the measurement data using the additional information carrier. In this case, provision is made for the additional information carrier to be determined using the measurement data and a key value defined by the module control device (6).

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.

Abstract: The invention relates to a method for transmitting data in a battery management system (1) having at least one main control device (2) and a number of module control devices (6-1, 6-2, . . . , 6-n) which transmit measurement values to the main control device (2) via a communications channel (5). One of the module control devices (6-1, 6-2, . . . , 6-n) is a reference module control device. The method comprises the method steps: a) the reference module control device transmits a reference measurement value on the communications channel (5), b) the module control devices (6-1, 6-2, . . . , 6-n) determine differential values of their own measurement values to the reference measurement value, c) the module control devices (6-1, 6-2, . . . , 6-n) transmit the differential values of their own measurement values to the reference measurement value on the communications channel (5) and d) the main control device (2) reconstructs the measurement values of the module control devices (6-1, 6-2, . . .

Abstract: The disclosure relates to a method for providing information for the purposes of maintaining and servicing a battery. The battery comprises a control unit, which has a non-volatile memory, and a plurality of battery units. The method comprises a) detecting and quantizing usage data of the battery units; b) forming a histogram, which comprises frequency values of an occurrence of certain values of individual quantized usage data or values derived therefrom; c) determining at least one additional information carrier, which is configured for a validity check of the histogram; and d) storing the histogram and the additional information carrier in the non-volatile memory of the control unit.

Abstract: The disclosure relates to a computer-implemented method for generating software for a battery management unit. Said method comprises at least the step of: generating a central battery configuration. In addition, the disclosure relates to a battery that can be operated using the software, and to a motor vehicle which comprises such a battery.