Control unit for a battery system

A method of activating a control unit for a battery system, the control unit comprising:

• a power input for an operation voltage provided by at least one battery cell;
• a control module configured to perform at least one control function with respect to the at least one battery cell;
• and a startup module connected between the power input and the control module, the method comprising the steps of:
• supplying an operation voltage of the control unit to the power input by the at least one battery cell;
• generating a security identifier from calibration data stored in a non-volatile memory element of the control unit using a security algorithm;
• validating the generated security identifier;
• and
• interconnecting the power input and the control module in response to the validation of the security identifier,
• wherein the calibration data is based on at least one testing process performed on the control unit and is required for a faultless operation of the control unit.

A control unit for a battery system comprising:

• a non-volatile memory element storing calibration data;
• a secure element configured to generate a security identifier from the calibration data using a security algorithm;
• a verification circuit configured to validate the security identifier;
• and
• a control module configured to perform at least one control function with respect to at least one battery cell,
• wherein the calibration data is based on at least one testing process performed on the control unit and is required for a faultless operation of the control module.