Battery management system, battery, motor vehicle having a battery management system, and method for monitoring a battery

A motor vehicle, comprising:

• a drive system;
• a battery connected to the drive system;
• and
• a battery management system configured to monitor the battery, the battery management system including:
• a plurality of first measuring units, each associated with at least one battery module of the battery, the first measuring units configured to capture at least one measured variable;
• a controller including a first microcontroller and a second microcontroller;
• a first communication link configured to transmit data between the first measuring units and the controller;
• a plurality of second measuring units configured to capture the at least one measured variable from the battery modules of the battery, in addition to the capture of the at least one measured variable by the first measuring units;
• and
• a second communication link configured to transmit data between the second measuring units and the controller,
• wherein the first microcontroller is configured to evaluate measurement data captured by the first measuring units, and the second microcontroller is configured to evaluate measurement data captured by the second measuring units independently of the first microcontroller.